Every aircraft eventually ends up in the wrong place at the wrong time: out of annual at a field with no IA, sitting in the path of a named storm, or sold to a buyer two time zones from the shop that will fix it. The aircraft cannot fly under its normal airworthiness certificate — it no longer meets the requirements behind that certificate. The special flight permit, known to everyone in the industry as the ferry permit, is the FAA's pressure valve for exactly this situation.
Two regulations carry the whole mechanism. 14 CFR §21.197 defines when a permit may be issued — for an aircraft that may not currently meet applicable airworthiness requirements but is capable of safe flight — and lists the authorized purposes. 14 CFR §21.199 defines how you apply: a statement covering the purpose, itinerary, crew, the specific ways the aircraft is out of compliance, and the restrictions you propose. The FAA may inspect or require tests, then issues the permit with operating limitations attached and a hard time window per §21.181(a)(2).
This guide walks through the six authorized uses, the application and the findings behind it, the operating limitations you should expect, the standing authorization that Part 135 operators and Part 91K programs can hold in their operations specifications, and — the part most write-ups skip — the document trail a ferry flight produces and why that trail matters years later at a pre-purchase review or an FAA records inspection.
What a Special Flight Permit Actually Is (§21.175, §21.181, §91.203)
A special flight permit is not a waiver scribbled in the margin of the rules — it is a class of airworthiness certificate. Under 14 CFR §21.175(b), special airworthiness certificates include those for primary, restricted, provisional, and limited category aircraft, light-sport aircraft, experimental purposes — and aircraft operating under a special flight permit. For the duration of the permitted flight, the permit and its attached operating limitations are the aircraft's airworthiness authority.
That has two practical consequences. First, the permit must be aboard: §91.203(a)(1) requires an appropriate and current airworthiness certificate in the aircraft, and §91.203(b) requires it displayed at the cabin or cockpit entrance so it is legible to passengers or crew — the same display rule that applies to the standard certificate it temporarily replaces. (A small drafting detail confirms the permit's status: §91.203(a)(1) requires the registration number on the airworthiness certificate but expressly excepts a special flight permit from that requirement.) Second, the permit expires by its own terms: under §21.181(a)(2), a special flight permit is effective for the period of time specified in the permit. There is no grace period and no implied extension — outside the window, the aircraft is back to having no valid airworthiness authority at all.
Not airworthy — but capable of safe flight
The legal standard in §21.197 is precise: the aircraft may not currently meet applicable airworthiness requirements but must be capable of safe flight. Those are different tests. An aircraft out of annual for eight months with no other discrepancies easily clears the bar. An aircraft with structural damage of unknown extent may not — and §21.199(b) gives the FAA the authority to make, or require the applicant to make, appropriate inspections or tests necessary for safety before issuing anything. The ferry permit is a bridge for paperwork-airworthy-but-not-certificate-current aircraft, not a hall pass for broken ones.
One scope note: §21.197 permits attach to U.S.-registered aircraft and their U.S. airworthiness certificates. A foreign-registered civil aircraft that lacks the certificates §91.203 normally requires uses a different instrument — a special flight authorization under 14 CFR §91.715 — issued through the FAA's Flight Standards or Aircraft Certification offices. Same idea, different rule; do not mix the two up in your records.
The Six Authorized Purposes (§21.197(a) and (b))
§21.197(a) lists five purposes for which a permit may be issued to an aircraft that may not currently meet applicable airworthiness requirements but is capable of safe flight. §21.197(b) adds a sixth, structurally different use: an airworthy aircraft operating above its certificated weight limit for a long-range delivery. Here is the complete set:
| Authority | Purpose | Typical Scenario |
|---|---|---|
| §21.197(a)(1) | Flying the aircraft to a base where repairs, alterations, or maintenance are to be performed, or to a point of storage | Expired annual at an outstation; moving a project aircraft to long-term storage |
| §21.197(a)(2) | Delivering or exporting the aircraft | Post-sale delivery flight; positioning for export |
| §21.197(a)(3) | Production flight testing new production aircraft | Manufacturer testing newly built airframes |
| §21.197(a)(4) | Evacuating aircraft from areas of impending danger | Hurricane or wildfire evacuation |
| §21.197(a)(5) | Conducting customer demonstration flights in new production aircraft that have satisfactorily completed production flight tests | Manufacturer demo flights before type paperwork is complete |
| §21.197(b) | Operation above maximum certificated takeoff weight for flight beyond the normal range over water, or over land areas where adequate landing facilities or appropriate fuel is not available | Transoceanic ferry with auxiliary ferry tanks |
The overweight case deserves a closer look because its limits are written into the rule itself. §21.197(b) authorizes operation at a weight in excess of maximum certificated takeoff weight only for flight beyond the normal range over water, or over land areas where adequate landing facilities or appropriate fuel is not available — and the excess weight is limited to the additional fuel, fuel-carrying facilities, and navigation equipment necessary for the flight. It is a ferry-tank rule, not a general overload allowance: you cannot use it to haul extra cargo, and the overweight configuration needs its own weight and balance computation in the aircraft's records.
The §91.213(e) cross-link: when the MEL runs out of road
For inoperative instruments and equipment, the first stop is the deferral system — the Minimum Equipment List and §91.213. But some discrepancies cannot be deferred: the item is not in the MEL, the repair interval has run out, or the aircraft has no MEL and the item fails the §91.213 tests. That is where §91.213(e) takes over: "Notwithstanding any other provision of this section, an aircraft with inoperable instruments or equipment may be operated under a special flight permit issued in accordance with §§ 21.197 and 21.199 of this chapter."
In other words, the ferry permit is the regulatory escape hatch built into the inoperative-equipment rule itself. The decision tree is: deferrable under the MEL or §91.213(d)? Defer, placard, and record it. Not deferrable? The aircraft is grounded where it sits — unless you obtain a special flight permit to move it.
Overdue AD? Read the AD before you ask for the permit
14 CFR §39.23 asks its own question — "May I fly my aircraft to a repair facility to do the work required by an airworthiness directive?" — and answers yes through two paths: some operators carry the authority in their operations specifications, and everyone else can request a special flight permit from the local Flight Standards District Office. But the same section warns that the airworthiness directive itself may prohibit ferry flight, and the FAA may attach special operating requirements or decline the permit where the aircraft cannot be moved safely. ADs address unsafe conditions; some unsafe conditions do not get to fly anywhere.
The most common real-world trigger remains the humble lapsed inspection. An aircraft whose annual inspection under §91.409 has expired is unairworthy on paper even if mechanically perfect — and a §21.197(a)(1) permit to fly it to the shop is the routine fix. The same logic covers an overflown progressive inspection event or an engine past a required inspection point. (A lapsed §91.411 or §91.413 test is different — it does not make the aircraft unairworthy, it only bars IFR-in-controlled-airspace operations or transponder use, so the aircraft can typically reposition VFR under its normal certificate without a ferry permit.)
Would You See the Lapse Coming?
Most ferry permits exist because an expiration date snuck up on someone — an annual, an altimeter test, an engine inspection point. FileFlo's free FAA Readiness Score checks whether your document set would surface those dates before they become a grounded aircraft at an outstation. No signup, no credit card, 3 minutes.
Run the FAA Readiness Score — FreeHow to Apply: The §21.199 Statement and the FAA's Findings
§21.199(a) opens with the one exception worth knowing — "Except as provided in § 21.197(c)," covering the continuing authorizations discussed below — and then requires every other applicant to submit a statement, in a form and manner prescribed by the FAA, indicating six things. This statement is the heart of the application, and a copy of it belongs in your records:
The Six Required Items (§21.199(a), verbatim)
"The purpose of the flight."
"The proposed itinerary."
"The crew required to operate the aircraft and its equipment, e.g., pilot, co-pilot, navigator, etc."
"The ways, if any, in which the aircraft does not comply with the applicable airworthiness requirements."
"Any restriction the applicant considers necessary for safe operation of the aircraft."
"Any other information considered necessary by the FAA for the purpose of prescribing operating limitations."
§21.199(b) then closes the loop on safety: "The FAA may make, or require the applicant to make appropriate inspections or tests necessary for safety."
Item 4 is where applications succeed or fail. Vague answers ("aircraft out of annual") invite questions; precise answers ("annual inspection due May 31 not performed; no other known discrepancies; last flight April 12 with no squawks") let the inspector scope the risk and write proportionate limitations. Item 5 is your chance to propose the restrictions you would accept anyway — daylight, VFR, direct routing, crew only — which both demonstrates judgment and tends to shape the limitations you receive.
In practice, the application is made on FAA Form 8130-6 (Application for U.S. Airworthiness Certificate) to the local Flight Standards District Office — the same office §39.23 points operators to in the AD context — and the permit, when issued, arrives as a special airworthiness certificate with an operating-limitations attachment. Production-aircraft purposes typically route through the FAA's manufacturing-oversight offices instead. Build in lead time: the FAA may exercise its §21.199(b) authority to inspect or require tests, and a mechanic's evaluation of the aircraft is commonly part of the package whether or not the FAA formally requires it.
A permit is discretionary, not automatic
Nothing in §21.197 entitles you to a permit. The capable-of-safe-flight standard is a finding the FAA has to be able to make, §21.199(b) lets it demand the evidence, and §39.23 says outright — in the AD context — that the FAA may decline to issue a special flight permit if it determines the aircraft cannot be moved safely. The stronger and more specific your statement and supporting maintenance records, the easier that finding is. An organized aircraft file is, quite literally, what gets the permit issued faster.
The Operating Limitations: What to Expect, What to Keep
The permit never travels alone. §21.199(a)(6) exists precisely so the FAA can gather what it needs for the purpose of prescribing operating limitations, and the limitations attachment is where the real rules of your ferry flight live. They are tailored to the aircraft and the discrepancy, but in practice the recurring set looks like this:
Occupancy limited to required crew
The crew you declared under §21.199(a)(3) is typically the only occupancy the limitations allow — no passengers, no carriage of persons or property for compensation or hire. The aircraft is flying because it is capable of safe flight, not because it is airworthy; the limitations keep the exposure to the people needed to fly it.
Route, weather, and time-window restrictions
Expect the itinerary you proposed under §21.199(a)(2) to come back as a condition: the specified routing, often day VFR only, sometimes with instructions to avoid congested areas, all inside the effectivity window that §21.181(a)(2) makes binding. Deviating from the stated route or flying after the window closes is operating without airworthiness authority.
A safe-for-flight determination — usually in the logbook
Permit limitations commonly require a certificated mechanic (or appropriately rated repair facility) to inspect the aircraft and determine it is safe for the intended flight, recording that determination in the maintenance records before departure. Any actual maintenance performed to prepare the aircraft for the ferry gets its own §43.9 maintenance record entry. These pre-departure entries are part of the ferry's document trail — keep them with the permit.
Discrepancy-specific conditions
A gear that will not retract means a gear-down, speed-limited ferry. An unpressurized-only restriction follows a pressurization discrepancy. An overweight §21.197(b) permit carries fuel-system and performance conditions for the ferry-tank configuration, plus the over-MTOW weight and balance data the crew flies to. The limitations translate item 4 of your application into flight conditions.
Busting the limitations voids the point of the permit
The permit authorizes one narrow operation under stated conditions. Fly a different route, carry an extra body, depart after the window, or skip the required pre-departure inspection entry, and the flight is no longer the operation the permit authorized — you are operating an unairworthy aircraft without authority, with the enforcement and insurance consequences that implies. (Insurers commonly treat ferry flights as a separate underwriting question; call your broker before the flight, not after.) The permit and its limitations must also be aboard and the permit displayed per §91.203 — an inspector meeting the aircraft at the destination will ask for it.
Every Permit Is an Expiration Date
A ferry permit, the inspection it exists to reach, the limitations entry behind it — they are all dated documents that someone has to track. FileFlo classifies aviation compliance documents automatically, indexes them against the governing CFR section, and surfaces what expires next, so the lapse that strands an aircraft never sneaks up again.
The Record Trail a Ferry Flight Should Leave Behind
Here is the part that matters long after the flight: a ferry permit documents a period when the aircraft was legally not airworthy. Years later, a pre-purchase reviewer or an FAA records inspector reading the aircraft's §91.417 record set will see the gap — the lapsed inspection, the discrepancy, the out-of-sequence dates — and the ferry-permit file is what turns that gap from a red flag into a documented, lawful event. A complete file for one ferry event contains:
The Ferry-Event Document Checklist
The application statement — the §21.199(a) six items (in practice, FAA Form 8130-6), including the precise description of the non-compliances under item 4. Keep your copy; it is the official account of why the aircraft needed the permit.
The permit itself plus the attached operating limitations — aboard and displayed during the flight per §91.203, then filed with the aircraft records. Note the effectivity window (§21.181(a)(2)); the dates on the permit should bracket the dates in the logbooks.
The pre-departure safe-for-flight determination the limitations required — typically a mechanic's maintenance-record entry — plus a §43.9 entry for any work performed to prepare the aircraft for the ferry.
The destination records that close the loop: the §43.9 maintenance entries and §43.11 inspection entries for the repair or inspection the aircraft was ferried to receive, the AD compliance record if §39.23 was the trigger, and FAA Form 337 if the fix was a major repair or alteration.
For §21.197(b) overweight ferries: the weight and balance computation for the over-MTOW configuration and the ferry-tank installation paperwork.
For continuing-authorization operators: the OpSpecs paragraph carrying the §21.197(c) authority, the approved program, and the per-event records your program requires — the evaluation, the decision, and the flight.
Retention reality: the permit is not named in the §91.417 retention lists, but the maintenance and inspection entries around it are part of the aircraft's permanent history — and the permit is the only document that explains them. In practice, the ferry file stays with the aircraft records for the life of the airframe.
Where FileFlo Fits in the Ferry-Permit Paper Trail
FileFlo is a compliance document intelligence platform — the proof layer that sits on top of your existing records. Upload the ferry file and it classifies each piece against the governing regulation: the permit and limitations as a time-boxed §21.197 authorization with its §21.181(a)(2) window tracked as an expiration, the application statement filed against the airframe, the §43.9 and §43.11 entries indexed to the maintenance event they document. When a buyer's reviewer or an inspector asks why N12345's records show a four-month airworthiness gap in 2025, the answer is one search away, assembled into an inspector-ready binder.
Just as important is what FileFlo does not do: it does not apply for permits, dispatch ferry flights, run your maintenance program or CAMP, or decide whether an aircraft is capable of safe flight. Those calls belong to your mechanic, your director of maintenance, and your FSDO. FileFlo makes sure the documents proving those calls were made correctly are classified, current, and findable — before the lapse, during the ferry, and years afterward.
One closing habit separates clean operators from scrambling ones: treat the ferry permit as a records event, not just a flight. Open a folder the day the discrepancy is found, and do not close it until the §43.11 return-to-service entry is filed next to the permit. The operators who do this never dread the question every reviewer eventually asks — show me why this aircraft flew while it was out of inspection.
Related Aviation Compliance Guides
MEL / CDL Records
The deferral system that handles what a ferry permit does not
Airworthiness Directive Compliance
AD records — and the §39.23 ferry question
Part 91.409 Annual Inspection
The lapsed inspection behind most ferry permits
Required Documents Aboard (ARROW)
Where the airworthiness certificate — or permit — must live in flight
Part 43.9 Maintenance Entries
The entries that bracket every ferry event
Operations Specifications (OpSpecs)
Where the §21.197(c) continuing authorization lives
Weight & Balance Records
The over-MTOW computation behind a §21.197(b) ferry
Part 135 CAMP Recordkeeping
The maintenance-program records continuing authorizations ride on
Frequently Asked Questions
What is a special flight permit (ferry permit)?
A special flight permit — universally called a ferry permit — is a special airworthiness certificate the FAA issues under 14 CFR §21.197 for an aircraft that may not currently meet applicable airworthiness requirements but is capable of safe flight. It is one of the classes of special airworthiness certificate listed in 14 CFR §21.175(b). The permit temporarily substitutes for the aircraft’s normal airworthiness authority so the aircraft can make a specific, limited flight — most commonly a one-way trip to a maintenance base. Under §21.181(a)(2), a special flight permit is effective for the period of time specified in the permit, so it is inherently a time-boxed document with operating limitations attached.
When do I need a ferry permit instead of an MEL deferral?
The Minimum Equipment List and 14 CFR §91.213 cover inoperative instruments and equipment the aircraft can legally fly with — items that can be deferred while the aircraft remains airworthy under its normal certificate. A ferry permit is for the situations the MEL cannot reach: an expired annual or other required inspection, a discrepancy the MEL does not list or cannot defer, an overflown inspection interval, or damage that takes the aircraft out of conformity. The bridge between the two regimes is §91.213(e), which states that notwithstanding any other provision of that section, an aircraft with inoperable instruments or equipment may be operated under a special flight permit issued in accordance with §§21.197 and 21.199. In short: if the deferral system can keep the aircraft airworthy, use it; if the aircraft no longer meets its airworthiness requirements, the ferry permit is the lawful path to move it.
Can I carry passengers on a special flight permit?
Plan on no. The application under 14 CFR §21.199(a)(3) requires you to state the crew required to operate the aircraft and its equipment, and the operating limitations the FAA attaches to the permit control who may be aboard — in practice they typically restrict occupancy to the required flightcrew and prohibit carrying passengers or property for compensation or hire. The permit exists because the aircraft does not currently meet its airworthiness requirements, so the FAA limits exposure to the people needed to make the flight. Read the operating limitations on your specific permit; they, not a general rule of thumb, govern the flight.
How long is a special flight permit valid?
There is no standard fixed duration. Under 14 CFR §21.181(a)(2), a special flight permit is effective for the period of time specified in the permit. The FAA sizes the window to the purpose and itinerary you stated in the §21.199(a) application — long enough to make the flight (or flights) described, accounting for weather and routing, and no longer. When the window closes, the permit is dead paper: if the aircraft has not moved, you apply again. That expiration date is also what makes the permit a trackable compliance document rather than a keepsake.
Can I get a ferry permit if my annual inspection is expired?
Yes — flying the aircraft to a base where required maintenance or inspections will be performed is the classic §21.197(a)(1) purpose, and an expired annual under §91.409 is the textbook trigger. The gate is that the aircraft must be capable of safe flight even though it is out of inspection. Under §21.199(b), the FAA may make, or require the applicant to make, appropriate inspections or tests necessary for safety — in practice the permit’s operating limitations commonly require a certificated mechanic to determine the aircraft is safe for the intended flight and record that determination before departure. An aircraft with a known unairworthy discrepancy that cannot be flown safely will not get a permit.
Can I ferry an aircraft with an overdue airworthiness directive?
Often, yes — but check the AD first. 14 CFR §39.23 is written as a question — may I fly my aircraft to a repair facility to do the work required by an airworthiness directive? — and answers that some operators have operations specifications provisions allowing it, and that operators without that authority may obtain a special flight permit from the local Flight Standards District Office. Two cautions come straight from that section: the airworthiness directive itself may prohibit ferry flight, and the FAA may add special operating requirements or decline the permit if the aircraft cannot be moved safely. So the sequence is: read the AD’s compliance section, then apply, and expect conditions tailored to the unsafe condition the AD addresses.
What is a continuing authorization special flight permit?
Under 14 CFR §21.197(c), certain certificated operators can hold a standing ferry-flight authority instead of applying to the FSDO for each event. Upon application as prescribed in §§91.1017 or 119.51, a special flight permit with a continuing authorization may be issued for aircraft that may not meet applicable airworthiness requirements but are capable of safe flight, for the purpose of flying the aircraft to a base where maintenance or alterations are to be performed. The permit is an authorization — including conditions and limitations for flight — set forth in the certificate holder’s operations specifications. It is available to certificate holders authorized to conduct operations under Part 119 that have an approved program for continuing flight authorization, and to Part 91 subpart K management specification holders maintaining their aircraft under a §91.1411 continuous airworthiness maintenance program.
What records does a ferry permit produce, and how long should I keep them?
A single ferry event generates a surprisingly complete document trail: the §21.199(a) application statement (purpose, itinerary, crew, the specific non-compliances, proposed restrictions), the permit itself with its attached operating limitations, any pre-departure safe-for-flight determination and maintenance record entry the limitations required, the §43.9 maintenance entries and §43.11 inspection entries made when the aircraft is actually repaired and returned to service at the destination, and — for an overweight permit under §21.197(b) — the weight and balance computation for the over-limit configuration. None of these is listed as a §91.417 permanent record by name, but in practice you keep the set with the aircraft records indefinitely: the permit is the document that explains the gap in the aircraft’s airworthiness history, and pre-purchase reviewers, auditors, and the FAA will ask exactly that question.
Keep the Whole Ferry File — Permit to Return-to-Service — Audit-Ready
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Written by Chad Griffith, Founder, FileFlo — compliance document intelligence · Reviewed June 10, 2026 · Primary sources: Cornell LII 14 CFR §21.197, §21.199, §21.181, §21.175, §91.213, §91.203, §91.715, §39.23