Per FAA Order 8900.1 Volume 6, FAA Principal Maintenance Inspectors typically conduct one to two Surveillance Visits and Evaluations (SVEs) per year at each certificated Part 145 repair station — with cadence driven by certificate ratings, risk-based surveillance criteria, complaints, and operating changes under 14 CFR §145.215. FAA civil penalties for §145 recordkeeping and QC manual violations reach $37,377 per violation in 2026 under 49 U.S.C. § 46301 (inflation-adjusted annually under the Federal Civil Penalties Inflation Adjustment Act). A systemic finding across the QC manual, contract maintenance list, or §145.219 work order retention compounds quickly — and the underlying maintenance work is usually not the problem. The documentation is.
Best Part 145 audit preparation software in 2026 manages the exact certificate-side documents an FAA PMI asks for during an SVE: the Quality Control system and current QC manual under 14 CFR §145.211; operating-change notifications under §145.215; the current contract maintenance list and qualification evidence under §145.217; and the two-year recordkeeping requirement for work orders and return-to-service records under §145.219. The stations that pass SVEs cleanly use software that surfaces revision gaps, missed notifications, stale lists, and record deficits weeks before the PMI arrives — not the day after.
The platforms ranked below split into two categories: per-tail maintenance tracking systems (CAMP, Veryon, Flightdocs) that forecast inspections and life-limited parts at per-aircraft pricing for the customer aircraft serviced, and certificate-side audit-prep platforms (FileFlo for cross-Subpart E coverage, Avantext for tech pubs revision control) that price for the operation rather than the fleet. The PMI reviews the certificate-side layer during an SVE — and that is where findings concentrate.
Primary regulations cited in this guide: 14 CFR Part 145 (Repair Stations), 14 CFR §145.211 (Quality control system), 14 CFR §145.215 (Operating rules — change in scope), 14 CFR §145.217 (Contract maintenance), 14 CFR §145.219 (Recordkeeping), FAA Order 8900.1 Vol. 6 (Surveillance), and 49 U.S.C. § 46301 (FAA civil penalties).
SVE findings are usually documentation problems, not maintenance problems
The most common findings during routine §145 Surveillance Visits are administrative failures the right software prevents structurally — stale §145.211 QC manual revisions, missed §145.215 5-working-day notifications, out-of-date §145.217 contract maintenance lists, and incomplete §145.219 work order retention. The underlying maintenance work is usually fine. Repair stations that lose certificates almost always failed first on certificate-side documentation, not on the wrench.
The 7 Best Part 145 Audit Preparation Platforms
Ranked by SVE preparation effectiveness, Subpart E coverage, mock-SVE checklist depth, and value across the certificate-side documents an FAA PMI reviews under FAA Order 8900.1 Vol. 6.
FileFlo
Top Pick — Best for Part 145 SVE Audit PreparationBest For
Certificated Part 145 repair stations preparing for FAA Surveillance Visits and Evaluations (SVEs) under FAA Order 8900.1 Vol. 6 — covering QC manual revision control, §145.215 operating changes, §145.217 contract maintenance lists, §145.219 work order recordkeeping, and Subpart E coverage
Key Feature
Mock-SVE checklist software — preconfigured to FAA Form 8120-11 surveillance line items with AI document classification routing every uploaded record to the correct Subpart E category automatically
Audit Focus
Mock SVE checklist, QC manual version control (§145.211), §145.215 operating change workflow, §145.217 contract maintenance tracking, §145.219 work order recordkeeping, one-click tabbed surveillance binder
Strengths
- Mock-SVE checklist mapped line-by-line to FAA Order 8900.1 Vol. 6 surveillance criteria
- QC manual version control with timestamped revision history per §145.211 acceptable-to-Administrator requirements
- §145.215 operating change workflow — tracks 5-working-day notification deadlines and prior-approval items
- §145.217 contract maintenance list auto-updates with qualification evidence and QC oversight records
- §145.219 work order recordkeeping with full 2-year retention, customer order linkage, and 8130-3 tag attachment
- One-click tabbed surveillance binder — organized to Subpart E, ready for the PMI in under 60 seconds
- $299/mo flat for unlimited users, documents, and aircraft — no per-mechanic or per-aircraft pricing tax
- 5-day free trial, no credit card required, no annual contract
Limitations
- Not a per-tail maintenance tracking system — pair with CAMP, Veryon, or Flightdocs for customer-aircraft inspection forecasting and life-limited parts management
- No built-in airframe/engine OEM database for type-specific inspection intervals
- No native MEL/CDL management for operator-side dispatch (not a Part 145 audit-prep concern)
Our take: FileFlo is the purpose-built answer to the Part 145 audit preparation problem. It is mapped to the exact line items an FAA PMI reviews during an SVE under FAA Order 8900.1 Vol. 6 — surfaces missing §145.211 QC manual revisions, lapsed §145.215 change notifications, stale §145.217 contract maintenance lists, and §145.219 record gaps weeks before the SVE date. The mock-SVE checklist and one-click tabbed surveillance binder eliminate the week-long scramble that precedes most SVEs at paper-based stations. For stations whose primary risk is the documentation review during routine FAA surveillance, FileFlo is the only platform priced and structured for the audit-prep use case.
CAMP Systems
Best for Per-Tail Maintenance Tracking (Customer Aircraft)Best For
Repair stations whose primary documentation burden is customer-aircraft per-tail inspection forecasting, life-limited parts management, and AD applicability rather than certificate-side SVE prep
Key Feature
Mature per-tail maintenance tracking database covering airframe, engine, and component history per aircraft serial number
Audit Focus
Per-customer-aircraft tracking — provides records for the aircraft, not for the station's §145.211 QC manual or §145.219 recordkeeping certificate-side obligations
Strengths
- Industry-leading per-tail maintenance tracking with deep airframe and engine databases
- Strong AD applicability and notification workflows for the customer aircraft being serviced
- Established enterprise reputation with Part 135 and Part 91 corporate flight department customers
- Useful complement to a certificate-side audit-prep platform when both tracking layers are needed
Limitations
- Not purpose-built for §145.211 QC manual revision control or §145.219 station-side recordkeeping
- Per-aircraft pricing — costly when applied across high customer-aircraft volume at a repair station
- No mock-SVE checklist mapped to FAA Order 8900.1 Vol. 6 surveillance line items
- No §145.215 operating change workflow or §145.217 contract maintenance list management
- Sales-led pricing; annual contracts standard
- No 5-day free trial
Our take: CAMP Systems is the per-tail maintenance tracking incumbent for customer aircraft. For SVE preparation at a Part 145 station — the §145.211 QC manual, §145.215 change tracking, §145.217 contract list, and §145.219 work order review — CAMP is structurally oriented to a different compliance layer. Pair CAMP with FileFlo when both layers matter.
Veryon (Traxxall)
Best Post-Merger Per-Tail Maintenance Tracking SuiteBest For
Repair stations and operators that want a single per-tail tracking platform after the 2024 Traxxall + Continuum CMP merger consolidated two legacy systems
Key Feature
Consolidated per-tail maintenance tracking + flight operations suite from the 2024 Traxxall + Continuum CMP rebrand
Audit Focus
Per-aircraft maintenance tracking, AD compliance for the aircraft, parts management — same certificate-side gap as CAMP for SVE prep
Strengths
- Post-2024 merger consolidated Traxxall + Continuum CMP into a single suite with broader coverage
- Cloud-first architecture with modern UI compared to legacy on-prem systems
- Strong international footprint (EASA + FAA dual-environment support) for stations with foreign customers
- Per-tail tracking + flight ops in one stack for customers needing both layers
Limitations
- Per-aircraft pricing — same misalignment with station-side §145 audit-prep use case as CAMP
- No §145.211 QC manual revision control or §145.219 station-side recordkeeping module
- No mock-SVE checklist mapped to FAA Order 8900.1 Vol. 6
- Post-merger integration period creates feature-roadmap uncertainty on some modules
- Sales-led pricing — no published rates
- Annual contracts standard
Our take: Veryon is the rebranded post-2024 result of the Traxxall + Continuum CMP merger. For per-tail tracking on customer aircraft, it is competitive with CAMP. For Part 145 SVE preparation specifically — the QC manual under §145.211, contract maintenance lists under §145.217, and recordkeeping under §145.219 — Veryon is the wrong layer of the stack and per-aircraft pricing accelerates the cost mismatch as customer volume grows.
Flightdocs
Best Cloud-First Per-Tail TrackingBest For
Repair stations and operators that want a cloud-first per-tail maintenance tracking platform with strong mobile experience for technicians
Key Feature
Cloud-native per-tail maintenance tracking with strong mobile experience for technicians, pilots, and DOMs
Audit Focus
Per-tail inspection tracking, AD compliance, parts management, mobile logbook entry — customer-aircraft layer, not certificate-side SVE prep
Strengths
- Cloud-first, mobile-friendly UI ahead of legacy maintenance tracking systems
- Strong adoption in Part 91 corporate and Part 135 charter customers serviced by repair stations
- Modern API stack for integration with flight ops and dispatch systems
- Per-tail subscription with predictable scaling for fleet operators
Limitations
- Primary value is per-tail maintenance tracking, not station-side §145.211 QC manual revision control or §145.219 recordkeeping
- Per-aircraft pricing — same structural mismatch for audit-prep use case as CAMP and Veryon
- Sales-led pricing — published rates not available
- No mock-SVE checklist or surveillance binder generation for Part 145 PMIs
- No 5-day free trial
Our take: Flightdocs is the modern cloud-first alternative to CAMP and Veryon in per-tail tracking. For Part 145 SVE preparation, the customer-aircraft layer does not address the certificate-side §145.211/§145.215/§145.217/§145.219 review the PMI conducts. Pair with FileFlo for the audit-prep layer.
Avantext
Best for Aviation Technical Publications DistributionBest For
Repair stations needing centralized AMM, SB, and tech publication distribution with revision control alongside maintenance tracking platforms
Key Feature
Centralized aviation technical publications library with automated AMM and SB updates from OEMs
Audit Focus
Tech publication revision control — touches §145.109 (data requirements) but does not handle §145.211 QC manual, §145.215, §145.217, or §145.219 station-side recordkeeping
Strengths
- Centralized AMM, SB, AD, and tech publication library reduces revision-control gaps under §145.109
- OEM publication feeds keep AMM revisions current — useful evidence during PMI data review
- Established footprint in business aviation MRO and repair-station data management
- Useful complement to a station-side audit-prep platform when tech-pub revision control is a discrete pain point
Limitations
- Tech publication distribution is one narrow slice of §145 compliance — does not address QC manual, contract maintenance, operating changes, or recordkeeping
- No mock-SVE checklist or surveillance binder
- Sales-led pricing — annual contracts standard
- No AI document classification for inbound work orders, training records, or 8130-3 tags
- No published flat-rate pricing tier
Our take: Avantext is a strong technical publications management layer for stations with multiple aircraft type ratings and OEM data subscriptions. It is not a Part 145 audit-prep platform. Best used alongside FileFlo for the station-side certificate review.
ATP CTS
Best for Pilot Training Records (Lower Fit for §145 SVE Prep)Best For
Operators and training organizations focused on pilot training records — limited Part 145 station-side fit
Key Feature
Pilot training records and currency tracking integrated with flight-ops scheduling
Audit Focus
Pilot training records — touches Subpart D inspector personnel training tangentially but is not designed for §145.211 QC manual or §145.219 recordkeeping
Strengths
- Strong pilot training records and currency tracking under Part 61 and Part 135 frameworks
- Established footprint in Part 135 charter operations and corporate flight departments
- Useful when a repair station also operates as a Part 135 carrier and needs unified pilot records
Limitations
- Pilot training records is the primary feature set — Part 145 station-side §145.211 QC manual, §145.215, §145.217, and §145.219 are out of scope
- No mock-SVE checklist mapped to FAA Order 8900.1 Vol. 6
- No tabbed surveillance binder generation for Part 145 PMI reviews
- Sales-led pricing; annual contracts standard
- No published per-mechanic or flat-rate tier
Our take: ATP CTS is a pilot training records platform. For a Part 145 repair station preparing for an SVE, it does not address the certificate-side documents the PMI reviews. Listed here for completeness because some integrated operations (Part 135 carrier + co-located Part 145 station) consider it; the audit-prep layer still belongs to FileFlo.
Paper / Spreadsheet / Network Drive
The Status Quo Most Repair Stations Are QuittingBest For
Very small certificated repair stations with one supervisory inspector and a single rating that have not yet outgrown a binder-and-Excel workflow
Key Feature
No software vendor relationship; full local control over file organization
Audit Focus
Whatever the station builds in Excel + a printed QC manual binder — vulnerable to §145.211 revision-control gaps, §145.215 missed notifications, §145.217 stale contract lists, and §145.219 record gaps
Strengths
- Zero software cost
- No vendor lock-in
- Familiar to long-tenured chief inspectors and accountable managers
- Works for the smallest single-rating stations with one person owning every record
Limitations
- No automated revision history on the QC manual — §145.211 acceptable-to-Administrator standard fails quickly when paper revisions accumulate
- No tracking of §145.215 5-working-day notification deadlines — operating changes routinely missed
- §145.217 contract maintenance lists go stale between updates — PMIs surface this reliably
- Building a §145.219 work order package for an SVE takes days of physical binder assembly
- No mock-SVE checklist — first time the station sees FAA Form 8120-11 line items is during the actual SVE
- Hidden labor cost: a chief inspector spending 6+ hours/week on document organization costs more annually than the software
Our take: Paper, spreadsheets, and network drives are the status quo most certificated repair stations are actively quitting in 2026. The hidden labor cost of manual record management plus the asymmetric downside of a single §145.211, §145.215, §145.217, or §145.219 finding (up to $37,377/violation under 49 U.S.C. § 46301) makes the status quo more expensive than a flat-rate audit-prep platform within the first SVE cycle.
Side-by-Side Comparison
All 7 platforms across the criteria that matter most for Part 145 SVE preparation: FAA SVE workflow, self-audit checklist, QC manual versioning, Subpart E coverage, pricing, and free trial availability.
| Criteria | FileFlo | CAMP | Veryon | Flightdocs | Avantext | ATP CTS | Paper |
|---|---|---|---|---|---|---|---|
| Platform | FileFlo | CAMP | Veryon | Flightdocs | Avantext | ATP CTS | Paper |
| SVE Workflow | ✅ Mock-SVE checklist mapped to 8900.1 Vol. 6 | ⚠️ Per-tail only | ⚠️ Per-tail only | ⚠️ Per-tail only | ❌ | ❌ | ❌ |
| Self-Audit Checklist | ✅ Subpart E mapped | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ Manual |
| QC Manual Versioning | ✅ Timestamped revisions | ❌ | ❌ | ❌ | ⚠️ Tech pubs only | ❌ | ❌ |
| Subpart E Coverage | ✅ §145.211/.215/.217/.219 | ⚠️ Indirect | ⚠️ Indirect | ⚠️ Indirect | ⚠️ §145.109 only | ❌ | ❌ |
| Pricing | $299/mo flat | ~$50–$500/aircraft | Per-aircraft | $30–$200/aircraft | Custom annual | Custom annual | $0 + hidden labor |
| Free Trial | ✅ 5 days | ❌ Demo only | ❌ Demo only | ❌ Demo available | ❌ Demo only | ❌ Demo only | N/A |
| AI Document Classification | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
⚠️ = partial or limited support. ❓ = unknown / not published. Data based on vendor documentation as of May 2026 and post-2024 Veryon merger context.
How to Choose the Right Part 145 Audit Preparation Platform
FAA SVE Workflow (FAA Order 8900.1 Vol. 6)
FAA Order 8900.1 Volume 6 is the operational citation for Surveillance Visits and Evaluations. The PMI arrives with a Form 8120-11 surveillance checklist organized to 14 CFR Part 145 Subparts A through E — and the repair station is expected to produce evidence on demand. Audit-prep software with a preconfigured mock-SVE checklist mapped to those exact line items lets the chief inspector or accountable manager run the same review days or weeks before the PMI, find the gaps, and close them. Stations using paper-and-Excel see Form 8120-11 line items for the first time during the actual SVE.
§145.211 QC Manual Revision Control: The First Document the PMI Asks For
Per 14 CFR §145.211, the QC manual must be current, must be acceptable to the Administrator, and must be revised whenever procedures change. Revision history is the audit trail — and revision history on paper is the audit trail that fails fastest. Audit-prep software with timestamped revision tracking, automated revision distribution to inspection and supervisory personnel, and signed acknowledgment workflows eliminates the most common §145.211 finding: the QC manual on the shelf is not the QC manual the staff actually follows. FileFlo's AI document classification ties every uploaded revision to the affected Subpart E section automatically.
§145.215 Operating Change Workflow: 5 Working Days Is Not Optional
Per 14 CFR §145.215, the station must notify the FAA of changes to housing, facilities, management personnel listed on the application, and any other change that may affect the certificate or ratings. The notification deadline is generally 5 working days for most changes, and certain changes (location, ratings, ownership transfer) require prior FAA approval before resuming work. Audit-prep software with a §145.215 change workflow tracks which notifications have been sent, which are still pending, and which require prior approval — and produces the notification record for the PMI on demand. Paper-based stations routinely miss this category of paperwork entirely.
§145.217 Contract Maintenance Audit Trail: Keep the List Current Between SVEs
Per 14 CFR §145.217, when the station contracts a maintenance function to another source, it must maintain a current list of contracted maintenance functions and contractor names, ensure the contractor is qualified, provide the list to the FAA, and update the list whenever it changes. The §145.217 contract list goes stale fast at paper-based stations — new contractors get added without the list being updated, and the QC oversight records for contracted work are scattered across email and a network drive. Audit-prep software keeps the contract list current automatically, attaches qualification evidence to each entry, and surfaces stale entries before the PMI does.
Mock SVE Checklist Software: Run the SVE Before the FAA Does
The single highest-leverage Part 145 audit-prep capability is a mock-SVE checklist mapped to the FAA Form 8120-11 surveillance line items and §145.219 recordkeeping criteria. The chief inspector runs the mock review monthly or quarterly, the software flags every gap the PMI would flag, and the gaps close before they become findings. The hidden labor cost of building this checklist manually plus the asymmetric downside of a single §145.211/§145.215/§145.217/§145.219 finding (up to $37,377/violation under 49 U.S.C. § 46301) makes the mock-SVE software pay for itself within the first surveillance cycle.
Mock SVE, QC manual revision control, and §145.219 records — all in one place
FileFlo runs the mock-SVE checklist your PMI uses, version-controls the §145.211 QC manual, tracks §145.215 5-working-day notifications and §145.217 contract lists, and produces a tabbed Subpart E surveillance binder in 60 seconds. $299/month flat for unlimited users and unlimited documents.
Frequently Asked Questions
What is Part 145 audit preparation software?
Part 145 audit preparation software organizes the documents an FAA Principal Maintenance Inspector (PMI) requests during a Surveillance Visit and Evaluation (SVE) at a certificated repair station. Per FAA Order 8900.1 Volume 6, repair stations typically receive one to two SVEs per year — each one a structured review of the station's Quality Control (QC) manual under 14 CFR §145.211, recordkeeping under §145.219, contract maintenance arrangements under §145.217, and any operating changes under §145.215. Audit prep software automates the mock-SVE checklist, version-controls the QC manual, surfaces missing records before the inspector asks, and produces a tabbed surveillance binder organized to Subpart E. The best platforms eliminate the week-long binder-assembly scramble that precedes most SVEs at paper-based stations.
How often does the FAA conduct Part 145 Surveillance Visits and Evaluations (SVEs)?
Per FAA Order 8900.1 Volume 6, FAA Principal Maintenance Inspectors typically conduct one to two Surveillance Visits and Evaluations per year at each certificated Part 145 repair station, with the cadence driven by certificate ratings, risk-based surveillance criteria, complaints, accident/incident involvement, and operating changes triggered under 14 CFR §145.215. Larger repair stations with broader ratings (airframe, powerplant, propeller, radio, instrument, accessory, limited) and higher work volume typically receive more frequent surveillance than smaller specialty shops. Event-driven SVEs can occur outside the routine cadence after any §145.215 change in scope, ownership, or housing/facility, after contract maintenance changes under §145.217, or after a customer complaint. The PMI shows up with an FAA Form 8120-11 surveillance checklist — the repair station shows up with whatever it has.
What does 14 CFR §145.211 require in a Quality Control manual?
Per 14 CFR §145.211, every certificated Part 145 repair station must establish, maintain, and follow a quality control system that includes a current QC manual covering: inspection procedures for incoming materials and parts; pre-, in-process, and final inspection procedures; procedures for the calibration of measuring and test equipment used in performing maintenance, preventive maintenance, or alterations; procedures for taking corrective action on deficiencies; procedures for the revision of the QC manual; procedures for the qualification of inspection personnel; procedures for inspections required by §145.221 (service difficulty reports); and the identification of the inspection responsibilities of supervisory personnel. The manual must be acceptable to the FAA Administrator, must be available to FAA inspectors, and must be revised whenever the procedures change. QC manual version control failures are one of the most common SVE findings.
What is a §145.215 operating change and when does it trigger FAA notification?
Per 14 CFR §145.215, a certificated Part 145 repair station must notify the FAA of changes to: the location of the repair station; the housing or facilities; any change of management personnel listed in the repair station application; or other changes that may affect the certificate or ratings. The notification timeline is generally 5 working days for most changes, and certain changes (location, ratings, ownership) require prior FAA approval before the repair station can resume work under the new condition. Operating-change software workflows track which changes have been notified, which require prior approval, and which are pending FAA acknowledgment — a category of paperwork that paper-based stations routinely miss and that PMIs reliably ask about during SVEs.
How does §145.217 contract maintenance documentation work during an SVE?
Per 14 CFR §145.217, when a certificated repair station contracts a maintenance function to another certificated repair station (or to a non-certificated source acceptable to the Administrator), the contracting station must (1) ensure the contracted source is qualified to perform the contracted maintenance function; (2) maintain a current list of all contracted maintenance functions, including the name of each contractor; (3) provide the FAA with the list at the time the repair station applies for the certificate or rating and update the list whenever there is a change; and (4) ensure the contracted maintenance is performed under the contracting station's QC system. During an SVE, the PMI reliably asks for the current contract maintenance list, the qualification evidence for each contracted source, and the QC oversight records for the contracted work. Audit prep software keeps this list current automatically, flagging stale entries before the PMI surfaces them.
What are the §145.219 recordkeeping requirements for Part 145 repair stations?
Per 14 CFR §145.219, a certificated Part 145 repair station must maintain records of all maintenance, preventive maintenance, and alterations performed for at least two years from the date the article was approved for return to service. The records must include the order or work order from the customer; the description of the work performed; the date the work was completed; the name of the person performing the work if other than the person approving the return to service; the signature, certificate number, and kind of certificate held by the person approving the return to service; and any required Form 337 or 8130-3 tags. The records must be made available to the FAA upon request and must transfer to a customer with the article on completion. §145.219 retention failures are routinely the first finding in any SVE — and they compound under 49 U.S.C. § 46301 at up to $37,377 per violation.
Can FileFlo replace CAMP Systems or Veryon for Part 145 audit preparation?
For audit preparation specifically — yes. CAMP Systems, Veryon (Traxxall), and Flightdocs are per-tail maintenance tracking platforms purpose-built for operators forecasting inspections, life-limited parts, and ADs at aircraft level. They are not purpose-built for the certificate-side document layer the FAA PMI actually reviews during a §145 SVE: QC manual revision history (§145.211), §145.215 change notifications, §145.217 contract maintenance lists, §145.219 work order recordkeeping, training records under Subpart D, and FAA Form 8130-3 traceability under Subpart C. FileFlo handles that layer at $299/month flat for unlimited users and unlimited documents, with a mock-SVE checklist, automated QC manual version control, and one-click tabbed surveillance binder generation. Most repair stations that maintain customer aircraft end up running CAMP or Veryon for per-tail tracking on those aircraft, plus FileFlo for the station's own certificate-side audit prep.
How much does Part 145 audit preparation software cost?
Pricing varies by category. Per-tail maintenance tracking platforms (CAMP Systems, Veryon/Traxxall, Flightdocs) price at roughly $30–$500 per aircraft per month under sales-led annual contracts — costs that scale linearly with customer aircraft volume. Aviation technical publications platforms (Avantext, ATP CTS) price under custom annual contracts without published rates. FileFlo prices at $299/month flat for unlimited users, unlimited aircraft, and unlimited documents — structurally cheaper for any repair station with growing customer aircraft volume or multiple supervisory and technical personnel under §145.151. The break-even against per-tail platforms typically arrives at three to five aircraft of regular customer work, well before most certificated stations cross that threshold.
Stop scrambling for the SVE the week before the PMI arrives
FileFlo runs the mock SVE for you. AI document classification, QC manual revision control, §145.215/§145.217/§145.219 workflows, and a one-click tabbed Subpart E surveillance binder — all for $299/month flat, no contract, no per-user fees, no per-aircraft fees.
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