A-1Husky
aviatEffective Sep 29, 2026Timetable 2000–2023
What mechanics have reported to the FAA on the Aviat Husky A-1, the airworthiness directives in force, and the NTSB accident record, on one sheet. A-1, A-1A, A-1B and A-1C-180/-200 Husky.
Top six of ten systems. Counts reflect who reports, not how reliable the airplane is.
- Registered
- 1,062 in the U.S., FAA registry Sep 29, 2026
- Reports on file
- 39 since 2000
- 2016–2025
- 8, about 0.8 a year per 1,000 registered
- ADs in force
- 18 (5 airframe, 13 engine)
- Accidents
- 230 since 1995, 23 fatal
Airworthiness directives
18 in force · 5 superseded not shown
From Federal Register final rules since 1995. Whether an AD applies to a particular airplane depends on its serial number, engine and installed equipment; confirm against the FAA’s Dynamic Regulatory System.
AD2020-25-01Effective Jan 11, 2021Textron Aviation, Inc. Airplanes (Type Certificate Previously Held by Beechcraft Corporation)One-time
Fatigue cracks have been reported in the lower forward wing fitting of these aircraft. This AD requires a one-time inspection for the presence of washer P/N 90-380058-1, removal if found, inspection of the wing fitting and related components, replacement of cracked fittings, and installation of replacement washer P/N 90-380019-1.
Read the AD in the Federal RegisterAD2020-21-22Effective Dec 7, 2020Textron Aviation Inc. AirplanesRepetitive
Cracks have been found in the tailcone and horizontal stabilizer attachment structure on certain Textron aircraft. This AD requires inspection of the tailcone and horizontal stabilizer for corrosion and cracks, with repair or replacement of any damaged parts.
Read the AD in the Federal RegisterAD2020-16-06Effective Sep 1, 2020Aviat Aircraft Inc.Repetitive
Forward and rear horizontal stabilizer support assemblies on these aircraft have experienced fatigue cracks and complete failure. Repetitive inspections of the forward horizontal stabilizer support assembly and rear horizontal stabilizer support tube are required, with results reported to the FAA.
Read the AD in the Federal RegisterAD2019-10-06Effective Jul 22, 2019Aviat Aircraft Inc. AirplanesRepetitive
Rapco fuel vent check valves can stick closed, causing fuel starvation to the engine. The AD requires adding a pre-flight check of the fuel vent check valves to the airplane flight manual and replacing any inoperative valves.
Read the AD in the Federal RegisterAD95-07-01Effective Apr 12, 1995Textron Lycoming O-360, LO-360, HO-360, HIO-360, TIO-360, LIO-360, AEIO-360, O-540, IO-540, TIO-540, LTIO-540, IVO-540, AEIO-540, TIO-541, and IO-720 Series Reciprocating EnginesOne-time
Unapproved connecting rod bolts sourced from Superior Air Parts, Inc., have failed in certain Textron Lycoming engines, potentially causing engine failure. The AD requires removing all suspect connecting rod bolts prior to further flight and replacing them with serviceable bolts.
Read the AD in the Federal RegisterAD2026-04-11Effective Apr 8, 2026Lycoming EnginesRepetitive
Certain connecting rod assemblies and bushings installed in Lycoming engines may fail due to inadequate design, potentially causing engine failure. This AD requires repetitive oil inspections for bronze particulates and replacement of affected connecting rod bushings with eligible parts.
Engine models named IO-360 series, O-320 series, O-360 series
Read the AD in the Federal RegisterAD2022-16-03Effective Aug 15, 2022Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating EnginesOne-time
Improperly lubricated roller bearings in certain S-1200 series magnetos may cause overheating and magneto seizure. This AD requires replacement of affected magnetos or inspection and component replacement if no white grease is detected.
Engine models named IO-360, O-320, O-360
Read the AD in the Federal RegisterAD2020-25-12Effective Jan 15, 2021Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft AssemblyOne-time
Three crankshaft assembly failures resulted in loss of engine power and emergency landings. This AD requires immediate removal from service of all affected SAP crankshaft assemblies.
Engine models named IO-360-B1A, IO-360-B1B, IO-360-B1D, IO-360-B1E, IO-360-B1F, IO-360-B2F, IO-360-L2A, IO-360-M1A, O-360, O-360-A1A, O-360-A1C, O-360-A1D
Read the AD in the Federal RegisterAD2015-19-07Effective Nov 3, 2015Lycoming Engines Fuel Injected Reciprocating EnginesRepetitive
Externally mounted fuel injector fuel lines on certain Lycoming fuel injected engines can fail, potentially causing uncontrolled engine fires and damage. This AD requires inspection and replacement if necessary of fuel injector fuel lines with proper clamping.
Engine models named IO-360-A1A, IO-360-A1B, IO-360-A1B6, IO-360-A1B6D, IO-360-A1C, IO-360-A1D, IO-360-A1D6, IO-360-A2A, IO-360-A2B, IO-360-A3B6, IO-360-A3B6D, IO-360-B1B
Read the AD in the Federal RegisterAD2009-22-03Effective Nov 12, 2009Hartzell Propeller Inc. ()HC-()2Y(K,R)-() Series PropellersRepetitive
Hartzell propeller hubs may crack, causing blade separation and loss of aircraft control. The AD requires initial and repetitive eddy current inspections of the front cylinder half for cracks, removal of cracked hubs from service, or installation of improved design hub (suffix SN A or B) as terminating action.
Engine models named IO-360 series, O-360 series
Read the AD in the Federal RegisterShow 8 older
AD2006-06-16Effective Apr 27, 2006Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating EnginesOne-time
Certain crankshafts in Lycoming AEIO-360, IO-360, O-360, LIO-360, and LO-360 series engines can fail, causing total engine power loss and possible aircraft loss. This AD requires replacement of affected crankshafts.
Engine models named IO-360, O-360
Read the AD in the Federal RegisterAD2005-19-11Effective Oct 21, 2005Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating EnginesOne-time
Certain Lycoming 360 and 540 series engines have experienced crankshaft failures that could cause total engine power loss and in-flight engine failure. This AD requires replacement of affected crankshafts.
Engine models named IO-360, O-360
Read the AD in the Federal RegisterAD2004-10-14Effective Jun 25, 2004Lycoming Engines (Formerly Textron Lycoming), Direct-Drive Reciprocating EnginesRepetitive
Crankshaft gear retaining bolts may loosen or fail on certain Lycoming direct-drive reciprocating engines, potentially causing sudden engine failure. The AD requires removal of existing gear retaining bolts and lockplates from service, installation of new hardware, and inspection of crankshaft gear installation after propeller strikes, sudden stoppages, or overhaul.
Engine models named O-320 series, O-360 series
Read the AD in the Federal RegisterAD2003-14-03Effective Aug 14, 2003Textron Lycoming Fuel Injected Reciprocating EnginesRepetitive
Certain Textron Lycoming fuel-injected engines equipped with Crane/Lear Romec rotary fuel pumps are prone to fuel leakage from the pump relief valve, which could cause engine failure or fire. Owners must inspect pump relief valve attaching screws for proper torque and replace the affected fuel pump at or before engine overhaul with a new design pump having enhanced leak resistance.
Engine models named IO-360
Read the AD in the Federal RegisterAD2002-12-07Effective Jul 3, 2002Textron Lycoming Reciprocating EnginesEmergency AD
Oil can leak between the converter plate and accessory housing on certain Lycoming engines, potentially causing complete engine oil loss, engine seizure, and fire. This AD requires replacement of the oil filter converter plate gasket or kit, inspection of the oil filter base for leakage, and eventually installation of an improved gasket or kit to eliminate the need for repetitive replacements.
Engine models named IO-360-A1B6D, IO-360-A1D6D, IO-360-A3B6D, IO-360-A3D6D, IO-360-C1E6D, IO-360-J1A6D, IO-360-J1AD, O-320-H1AD, O-320-H1BD, O-320-H2AD, O-320-H2BD, O-320-H3AD
Read the AD in the Federal RegisterAD2000-04-10Effective Mar 9, 2000Hoffmann Propeller Co. HO27( ) and HO4/27 Series PropellersRepetitive
Propeller mounting bolts may lose torque due to operating conditions and environmental factors, risking propeller separation. The AD requires installing improved mounting bolts, torquing them to a higher value, flying the airplane once, and retorquing as needed.
Engine models named O-360 series
Read the AD in the Federal RegisterAD98-01-06Effective Feb 13, 1998Precision Airmotive Corporation CarburetorsRepetitive
Precision Airmotive carburetors with two-piece venturis may have loose or missing primary venturis, or fuel flow disruption when a one-piece venturi is installed, causing loss of power or forced landings. Owners must either perform repetitive inspections of two-piece venturis annually, or optionally install a one-piece venturi with a new fuel nozzle as a terminating action.
Engine models named O-320 series
Read the AD in the Federal RegisterAD97-15-11Effective Aug 12, 1997Avco Lycoming and Textron Lycoming Reciprocating EnginesOne-time
Certain Lycoming reciprocal engines may have defective piston pins that could fail and cause engine failure. Affected engines must be removed from service and replaced with serviceable parts according to the referenced service bulletin.
Engine models named IO-360, O-320, O-360
Read the AD in the Federal RegisterEngine ADs name an engine model family used on some Huskys; check the exact model and serial. 4 more apply by part number only and are not listed.
Accident history
230 U.S. accidents involving the Husky since 1995, 23 of them fatal, with 30 fatalities. Homebuilt aircraft excluded. Counts, not rates: they follow fleet size, hours flown and how the airplane is used.
- Ground90
- Takeoff and climb388
- Cruise114
- Maneuvering277
- Approach and descent181
- Landing1262
- Other or unknown11
Phase of the event the NTSB recorded as defining the accident.
- 1995–1999182
- 2000–2004357
- 2005–2009482
- 2010–2014495
- 2015–2019324
- 2020–2024403
- 2025–202680
2026 is year to date. Investigations can take a year or more to reach the data.
NTSB cause findings, 2008–2026 · share of 142 accidents with findings
- 61% Personnel issues
- 51% Aircraft performance and control
- 12% Environmental issues
- 9.9% Aircraft systems, powerplant and structure
- 1.4% Not determined
Most frequent cause findings
- Aircraft controlPersonnel issues59
- Directional control: not attained/maintainedAircraft performance and control33
- Airspeed: not attained/maintainedAircraft performance and control8
- Decision making/judgmentPersonnel issues8
- Incorrect action performancePersonnel issues5
- Descent/approach/glide path: not attained/maintainedAircraft performance and control5
- Lateral/bank control: not attained/maintainedAircraft performance and control4
- Use of equip/systemPersonnel issues4
- Gusts: response/compensationEnvironmental issues3
- Angle of attack: capability exceededAircraft performance and control3
Findings about systems and powerplant
- Brake: incorrect use/operationLanding gear system2
- Fuel: fluid managementFluids2
- Brake: malfunctionLanding gear system1
- Rudder control system: incorrect use/operationFlight control system1
- Aileron control system: fatigue/wear/corrosionFlight control system1
- Propeller blade section: not specifiedPropeller system1
- Recip engine power section: damaged/degradedEngine (reciprocating)1
- Fuel control/carburetor: incorrect use/operationEngine fuel and control1
Wording is the NTSB’s. An accident can carry findings in several categories. Read individual investigations in the NTSB’s CAROL database.
What gets written up
39 reports · 2000–2023
The ten systems with the most service difficulty reports, by FAA system code (JASC). Fewer than 200 reports were filed on the Husky in 2016–2025, so read these as long-run patterns.
55Horizontal Stabilizer Structure513%0
Parts most often named Terminal (3) · Tie Bolt (1) · Brace (1)
LEFT FORWARD HORIZONTAL STABILIZER STRUT UPPER TERMINAL BROKE. BREAK OCCURED ON THE UPPER THREADED PORTION OF THE FITTING.
LEFT LOWER FORWARD TAIL STRUT THREADED ROD DISCOVERED BROKEN ON PREFLIGHT. (NO ADVERSE FLIGHT CHARACTERISTICS NOTED ON PREVIOUS FLIGHT.) ROD BROKEN AT END OF 5/16 INCH X 24 THREADS NEXT TO 5/16 INCH HEX SHAFT.
FORWARD HORIZONTAL STABILIZER STRUT UPPER TERMINAL WAS FOUND BROKEN ON PREFLIGHT. BREAK OCCURED ON .3125 (5/16) THREADED PORTION AT UPPER END OF THREADS.
25Emergency Locator Beacon410%1
Parts most often named Elt (2) · G Switch (2)
DURING ANNUAL INSPECTION, PERFORMED ELT FUNCTIONAL TEST AND FOUND G-SWITCH INTERMITTENTLY INOPERATIVE. REMOVED ELT FROM [S/N removed].
85Reciprocating Engine Oil System37.7%0
Parts most often named Gasket (2) · Screen (1)
FILTER ADAPTER WAS MISSING PN MS28773-08 GASKET. AN6289-8D. NUT WAS NOT TORQUED. OIL FILTER ADAPTER WAS LEAKING. (X)
78Engine Collector/Tailpipe/Nozzle25.1%0
Parts most often named Slip Joint (1) · Baffle (1)
32Main Landing Gear Strut/Axle/Truck25.1%0
Parts most often named Strut (1) · Attach Fitting (1)
TACH 80.2 HOURS LEFT MAIN GEAR ATTACHMENT(FORWARD STRUT) SHEARED OFF AT FUSELAGE ATTACHMENT POINT DURING NORMAL LANDING OF AIRCRAFT. THE WELDED AREA THAT THE LH FORWARD STRUT ATTACHES TO THE FRAME LOOKS TO HAVE POSSIBLE INADEQUATE PENETRATION, POROUS AND CONSIDERED A COLD WELD.
LANDING GEAR STRUT FAILED AT WELD DUE TO COMPLETE LACK OF WELD PENETRATION. LANDING GEAR SEPARATED FROM AIRCRAFT AT LANDING. DUE TO WELD FAILURE.
57Wing, Control Surfaces25.1%0
Parts most often named Stop (1) · Aileron (1)
FOUND RIVET IN AILERON LEADING EDGE HAD CAUGHT CORNER OF RIB INSTEAD OF THROUGH CENTER OF RIB. CONDITION IN BOTH LEFT AND RIGHT AILERONS AT WS123. REPAIRED CONDITION IAW MFG LETTER OF INSTRUCTION.
DURING FLAP HANDLE REPLACEMENT, THE FLAP SETTING STOP ASSY WAS REMOVED AND A CRACK WAS FOUND IN THE FULL FLAP NOTCH AND FAILURE OF THE ASSY WAS FORTHCOMING. THIS SAME STOP ASSY HAD BEEN REMOVED 128.7 HOURS EARLIER FOR FLAP SYSTEM INSPECTION AND NO CRACK WAS PRESENT AT THAT TIME. THIS WOULD BE THE SECOND FLAP STOP ASSY FAILURE DUE TO CRACKING FOUND BY THIS SHOP.
28Aircraft Fuel Distribution System25.1%1
Parts most often named Strainer (1) · Vent (1)
FUEL GASCOLATOR/STRAINER ON FIREWALL WAS FACTORY-INSTALLED BACKWARD. FUEL FROM TANKS ENTERED THE "OUT" PORT, FUEL GOING TO CARBURETOR WENT OUT THE "IN" PORT. PORTS ARE MARKED PLAINLY BUT NOT EASILY VISIBLE AFTER INSTALLATION. PROBLEM WAS FOUND AFTER NOTICING THAT DEBRIS CAPTURED BY STRAINER WAS ON TOP OF THE FILTER SCREEN INSTEAD OF BELOW IT, WHERE IT SHOULD SETTLE IN THE BOTTOM OF THE BOWL. GASCOLATOR IS SYMMETRICAL BUT CLEARLY MARKED-SOMEONE JUST GOT IT BACKWARDS.
ON RUNUP, ENGINE WOULD QUIT. ALLOWED TO SIT APPROX 3 MINUTES, IT WOULD START AND RUN, THEN QUIT. WHEN FUEL CAP WAS REMOVED A WHOOSH OF INCOMING AIR WAS HEARD. ENGINE RAN WITH THE CAP OFF. SUSPECT ICE BLOCKING FUEL VENT LINES INSIDE WING. AFTER OVERNIGHT IN HANGER, BOTH VENTS FREE.
71Engine Cowling System12.6%0
Parts most often named Hinge (1)
53Fuselage Structure (General)12.6%0
Parts most often named Screw (1)
SCREWS ON THE OUTER PANELS ON THE FUSELAGE ARE HITTING THE FRAME ALL AROUND THE LOWER SECTION OF THE FRAME. SCREWS SEEM TO BE TO LONG AND ARE ERODING THE FRAME TUBING IN CERTAIN AREAS. THIS SEEMS TO BE A FLAW IN THE DESIGN OF THE MANUFACTURER. IT SEEMS THE SCREWS ARE TO LONG AND ARE RUBBING ON THE FRAME. THIS IS OCCURRING ON EVERY METAL PANEL ON THE LOWER ATTACH ROWS.
27Rudder Control System12.6%0
Parts most often named Rudder Pedal (1)
Open a row to read what mechanics wrote. Tail and serial numbers are removed.
At the pre-buy
My pre-buy card · Husky
0 of 7 looked at
The components written up most often since 2011. Take this to the pre-buy and ask your inspector about each one; tap a mark to record what they found. Saved on this device only.
- Emergency Locator Beacon
- Engine Cowling System
- Ailerons
- Propeller Blade Section
- Fuel Quantity Indicator
- Aircraft Fuel Distribution System
- Hydraulic System, Main
A starting point for the conversation with your inspector, not maintenance advice.
What buyers get caught by
The expensive surprises on any used airplane are missing logbooks, corrosion under paint, outstanding ADs, an engine near overhaul, and the same squawk written up again and again. The card lists where the Husky gets written up; the AD timetable below lists what the FAA requires.
Ask for the logbook entries that match each item. A repeated entry is a pattern, not a coincidence.
Alerts for the Husky
An email when a new airworthiness directive names the Husky, or when reports on it spike. Alerts are starting soon: leave your email and we’ll send a confirmation link before anything else. Unsubscribe anytime.
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