Other and general
Placards, servicing, time limits and general maintenance: the paperwork and routine that keep the rest airworthy.
Operators and repair shops have filed 733 failure reports about this system since 1995, 113 of them in the last ten years. The FAA has issued 2,604 airworthiness directives on it, the most recent November 23, 2026. The part most often named in the reports is the placard. Among model families, the Boeing 737 appears most often in the last ten years; taking fleet size into account, the Embraer ERJ 170 E170 and E175 has the highest rate among sizeable fleets, about 0.2 reports a year for every 100 aircraft.
Failure reports by year as filed with the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 95 | 4 |
| 96 | 3 |
| 97 | 4 |
| 99 | 3 |
| 00 | 2 |
| 01 | 8 |
| 02 | 70 |
| 03 | 142 |
| 04 | 151 |
| 05 | 42 |
| 06 | 6 |
| 07 | 30 |
| 08 | 9 |
| 09 | 22 |
| 10 | 44 |
| 11 | 25 |
| 12 | 17 |
| 13 | 18 |
| 14 | 10 |
| 15 | 4 |
| 16 | 6 |
| 17 | 1 |
| 18 | 1 |
| 19 | 5 |
| 20 | 4 |
| 21 | 8 |
| 22 | 23 |
| 23 | 13 |
| 24 | 16 |
| 25 | 31 |
| 26 | 11 |
Models most often named last ten years
Boeing 73728Embraer ERJ 170 E170 and E17512Airbus A32110Bombardier CL-600 Challenger and CRJ8Boeing 7575Bombardier DHC-8 Dash 8 and Q4005Airbus A3194Airbus A3304Boeing 7674Airbus A3203Embraer EMB-145 ERJ 1453Airbus A3002
Model families most named, as a table
Highest rate, fleets of 500 or more reports a year per 100 aircraft registered
Parts most often named
Placard70Bolt3Connector2Screw2Sign2Abs1Bearing1Bracket1Cable Assy1Cotter Pin1Cowl Fastener1Data Plate1
Parts most reported, as a table
| reports | |
|---|---|
| Placard | 70 |
| Bolt | 3 |
| Connector | 2 |
| Screw | 2 |
| Sign | 2 |
| Abs | 1 |
| Bearing | 1 |
| Bracket | 1 |
| Cable Assy | 1 |
| Cotter Pin | 1 |
| Cowl Fastener | 1 |
| Data Plate | 1 |
Who made the parts named last ten years, as the reports code them
Group Economique Airbus Industrie6The Boeing CO3Bombardier Aerospace3Air Cruisers Div of Garrett CORP2Empresa Brasileira de Aeronautica SA2Aar CORP1Bell Helicopter CO. Div. Textron INC1Messerschmitt-Bolkow-Blohm1Cessna Aircraft CORP1Cirrus Design Corp.Duluth Mn 558111
Part makers most named, as a table
| reports | |
|---|---|
| Group Economique Airbus Industrie | 6 |
| The Boeing CO | 3 |
| Bombardier Aerospace | 3 |
| Air Cruisers Div of Garrett CORP | 2 |
| Empresa Brasileira de Aeronautica SA | 2 |
| Aar CORP | 1 |
| Bell Helicopter CO. Div. Textron INC | 1 |
| Messerschmitt-Bolkow-Blohm | 1 |
| Cessna Aircraft CORP | 1 |
| Cirrus Design Corp.Duluth Mn 55811 | 1 |
What was wrong with them the condition reported
Missing36Damaged16Worn7Detached6Cracked4Mismanufactured4Loose3Torn3Broken2Corroded2
Conditions most reported, as a table
| reports | |
|---|---|
| Missing | 36 |
| Damaged | 16 |
| Worn | 7 |
| Detached | 6 |
| Cracked | 4 |
| Mismanufactured | 4 |
| Loose | 3 |
| Torn | 3 |
| Broken | 2 |
| Corroded | 2 |
Where in the system the FAA's codes
Placards and markings 91Hardware 9Hardware 6Servicing 3Servicing 3Hardware 3Hardware 2Servicing 1Hardware 1
What the NTSB found accidents and incidents since 2008 in which the NTSB's findings named this system
In 263 cases since 2008 the NTSB named other and general as a cause (120 of them) or a contributing factor; 43 of those were fatal accidents. The part most often named is the (general) › (general). Among model families, the Cessna 172 Skyhawk appears most often. A failure report (above) is a part that failed and was fixed; an NTSB finding is a part that the investigators decided helped cause an accident. The two measure different things, and both are here.
Cases by year
Parts and problems named
(general) › (general)69Misc hardware › Fasteners60Misc hardware › Hoses and tubes44Misc hardware › (general)41Fluids › Hydraulic fluid35Fluids › Water12Fluids › (general)12Fluids › Grease7Fluids › Coolant4Misc hardware › Misc wiring4
Parts the NTSB named, as a table
| cases | |
|---|---|
| (general) › (general) | 69 |
| Misc hardware › Fasteners | 60 |
| Misc hardware › Hoses and tubes | 44 |
| Misc hardware › (general) | 41 |
| Fluids › Hydraulic fluid | 35 |
| Fluids › Water | 12 |
| Fluids › (general) | 12 |
| Fluids › Grease | 7 |
| Fluids › Coolant | 4 |
| Misc hardware › Misc wiring | 4 |
Models most often named
Cessna 172 Skyhawk 18Cessna 210 Centurion 12Piper PA-28 Cherokee, Warrior, Archer and Arrow 11Piper PA-32 Cherokee Six, Lance and Saratoga 8Cessna 182 Skylane 7Bombardier CL-600 Challenger and CRJ 6Bell 47 5Airbus Helicopters AS350 AStar (Écureuil), now H125 5Beechcraft A36 Bonanza 5Bell 206 JetRanger and LongRanger 5
What was wrong last ten years · share of 119 reports that say
poor quality control4 (3%)smoke, fumes, odours or sparks3 (3%)a warning light or message2 (2%)flame or fire1 (0.8%)foreign object damage1 (0.8%)flight controls affected1 (0.8%)more than one failure1 (0.8%)no warning when there should have been1 (0.8%)
As a table
| reports | share | |
|---|---|---|
| poor quality control | 4 | 3% |
| smoke, fumes, odours or sparks | 3 | 3% |
| a warning light or message | 2 | 2% |
| flame or fire | 1 | 0.8% |
| foreign object damage | 1 | 0.8% |
| flight controls affected | 1 | 0.8% |
| more than one failure | 1 | 0.8% |
| no warning when there should have been | 1 | 0.8% |
When it was found last ten years · share of 119 reports that say
inspection or maintenance81 (68%)taxiing or ground handling15 (13%)cruise5 (4%)climb3 (3%)take-off3 (3%)air ambulance work1 (0.8%)hovering1 (0.8%)
As a table
| reports | share | |
|---|---|---|
| inspection or maintenance | 81 | 68% |
| taxiing or ground handling | 15 | 13% |
| cruise | 5 | 4% |
| climb | 3 | 3% |
| take-off | 3 | 3% |
| air ambulance work | 1 | 0.8% |
| hovering | 1 | 0.8% |
What the crew did last ten years · share of 119 reports that say
an unscheduled landing7 (6%)an emergency descent2 (2%)an aborted take-off1 (0.8%)an engine shut down1 (0.8%)
As a table
| reports | share | |
|---|---|---|
| an unscheduled landing | 7 | 6% |
| an emergency descent | 2 | 2% |
| an aborted take-off | 1 | 0.8% |
| an engine shut down | 1 | 0.8% |
Who filed the report last ten years · share of 119 reports that say
an airline (Part 121)93 (78%)a charter or commuter operator (Part 135)11 (9%)a repair station (Part 145)7 (6%)a mechanic3 (3%)a private or corporate operator (Part 91)1 (0.8%)a manufacturer1 (0.8%)the FAA1 (0.8%)a pilot1 (0.8%)
As a table
| reports | share | |
|---|---|---|
| an airline (Part 121) | 93 | 78% |
| a charter or commuter operator (Part 135) | 11 | 9% |
| a repair station (Part 145) | 7 | 6% |
| a mechanic | 3 | 3% |
| a private or corporate operator (Part 91) | 1 | 0.8% |
| a manufacturer | 1 | 0.8% |
| the FAA | 1 | 0.8% |
| a pilot | 1 | 0.8% |
How it was found last ten years · share of 119 reports that say
a visual inspection69 (58%)a functional check1 (0.8%)
As a table
| reports | share | |
|---|---|---|
| a visual inspection | 69 | 58% |
| a functional check | 1 | 0.8% |
FAA orders 2,604 airworthiness directives · newest first
2026-11-232026-21-03 · Fuel
2026-11-122026-20-10 · Flight Controls
2026-10-162026-18-06 · Time limits/Maintenance checks
2026-10-162026-18-02 · Time Limits/Maintenance Checks
2026-10-162026-18-05 · Time Limits/Maintenance Checks
2026-10-142026-21-01 · Prohibited Operation
2026-09-182026-16-09 · Time Limits/Maintenance Checks
2026-09-172026-16-04 · Time Limits/Maintenance Checks
2026-09-032026-15-16 · Time Limits/Maintenance Checks
2026-08-182026-14-09 · Time Limits/Maintenance Checks
2026-08-032026-12-10 · Equipment/Furnishings
2026-07-212026-12-09 · Time Limits/Maintenance Checks
All 2,604 orders on this system
Orders by decade
Who makes and modifies it
Companies the FAA has approved to make equipment for this system (technical standard order authorisations):
Honeywell Aerospace US LLC 119Garmin International INC. 75Alliedsignal Aerospace 37Sigma Tek, INC. 30Rockwell International Avionics Group 29Arconic Fastening Systems & Rings 26Bendix General Aviation 25Bendix Corporation Flight Systems Division 23Acron Aviation INC. 22Collins Radio CO. 22Bendix Radio Division 19Rockwell International CORP. Collins General Avn. Div. 18
Approved modifications 17,867 · the companies holding the most
S-Tec Corporation 747Gulfstream Aerospace Corporation 522Textron Aviation INC 277Honeywell International INC 234Learjet INC 210American Eurocopter Corporation 208Bell Helicopter Textron INC. 171Safran Cabin INC. 170Rockwell Collins INC 167United Airlines INC 160
Engine series most often named last ten years
Pratt & Whitney Canada PW306A 2Allison (Rolls-Royce) 250-C47B 1Continental TSIO-360-EB 1Continental TSIO-520-VB 1Lycoming LTIO-540-J2BD 1Rolls-Royce BR 700 series 1
Safety bulletins 663 · advice, not orders
2026-10-032026-17 · VNAV Approach Disconnect Following Missed Approach, Anomaly on Airplanes with FMC U14.0/14.1
2026-07-102026-12 · GLOBAL POSITIONING SYSTEM
2026-05-042023-03R2 · Rotorcraft Crash Resistant Fuel Systems
2026-03-022026-05 · Rotorcraft Loss of Control Prevention/Recovery Systems
2026-01-232026-03 · EMERGENCY EQUIPMENT, Orion Safety Products Skyblazer II Red XLT Aerial Signal
2025-07-222025-06 · High Pressure Turbines
Sources: FAA service difficulty reports (yearly files since 1995, grouped by the FAA's four-digit system code into this site's fourteen systems), airworthiness directives, supplemental type certificates, technical standard order authorisations and special conditions from the FAA's Dynamic Regulatory System. Rates per 100 aircraft use today's register as the fleet; they show reporting as much as reliability, and commercial fleets report more. Connections as data: /graph/system/other.json.