# NTSB investigations, 2021: Aircraft maintenance event

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB CEN22LA060](https://openairdocs.org/ntsb/CEN22LA060.md): Piper PA-46-310P · Cassville, MO · Accident · No injuries · Class 4 · Limited · Final report · Dec 1, 2021 · N444DT · Substantial damage
  > The pilot’s failure to reinstall the nose landing gear linkage prior to the flight which resulted in a loss of directional control during landing.
- [NTSB ERA22LA080](https://openairdocs.org/ntsb/ERA22LA080.md): Piper PA-12 · Labelle, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Nov 30, 2021 · N3098M · Substantial damage
  > The pilot’s improper fuel system modification, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB ERA22LA064](https://openairdocs.org/ntsb/ERA22LA064.md): Mooney M20M · Tampa, FL · Accident · No injuries · Class 3 · Limited · Final report · Nov 15, 2021 · N21890 · Substantial damage
  > The total loss of engine power due to the failure of maintenance personnel to properly tighten the fuel supply line b-nut at the manifold valve during installation.
- [NTSB ERA21LA356](https://openairdocs.org/ntsb/ERA21LA356.md): Waco GXE · Burt, NY · Accident · No injuries · Class 3 · Limited · Final report · Sep 13, 2021 · N8564 · Substantial damage
  > The improper magneto timing, which resulted in the engine’s inability to produce full power during the takeoff.
- [NTSB ERA21LA328](https://openairdocs.org/ntsb/ERA21LA328.md): Piper PA-28-140 · Orlando, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 17, 2021 · N98304 · Substantial damage
  > A total loss of engine power due to fuel starvation that resulted from improper maintenance of the fuel selector valve and fuel selector valve cover.
- [NTSB CEN21LA379](https://openairdocs.org/ntsb/CEN21LA379.md): Diamond Aircraft Industries DA-42 · Bellefontaine, OH · Accident · No injuries · Class 3 · Limited · Final report · Aug 17, 2021 · N215BN · Substantial damage
  > The improper position of the right engine’s fuel feed pump bolt, which led to a total loss of power on the right engine, and the left engine's partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB WPR21LA325](https://openairdocs.org/ntsb/WPR21LA325.md): Stout Garry V Europa - Trigear · Hanksville, UT · Accident · No injuries · Class 3 · Limited · Final report · Aug 16, 2021 · N133AC · Substantial damage
  > The pilot’s installation of a non-original equipment manufactured radiator cap, which resulted in the loss of coolant and the engine’s exceedance of the maximum admissible cylinder head temperature. Contributing to the accident was the lack of suitable…
- [NTSB CEN21LA358](https://openairdocs.org/ntsb/CEN21LA358.md): Cessna 182 · Patterson, LA · Accident · No injuries · Class 3 · Limited · Final report · Jul 27, 2021 · N148LP · Substantial damage
  > The mechanic’s failure to properly secure the throttle arm rendering it loose and inoperable after takeoff, which resulted in a total loss of engine power.
- [NTSB CEN21LA341](https://openairdocs.org/ntsb/CEN21LA341.md): Cessna T210F · Peyton, CO · Accident · No injuries · Class 4 · Limited · Final report · Jul 27, 2021 · N6162R · Substantial damage
  > The pilot’s fuel mismanagement that resulted in a complete loss of engine power during climb and subsequent impact with terrain during a forced landing.
- [NTSB ERA21LA297](https://openairdocs.org/ntsb/ERA21LA297.md): Cessna 150 · Arden, NC · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2021 · N3059X · Substantial damage
  > The inadequate inspection of the throttle control cable assembly, which resulted in a partial loss of engine power during cruise flight.
- [NTSB CEN21LA326](https://openairdocs.org/ntsb/CEN21LA326.md): Gary James Lail Zenith CH 750 Cruzer · Blossom, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 17, 2021 · N9667Z · Substantial damage
  > The improper swaging of the rudder control cable, which disconnected during flight and resulted in the loss of control.
- [NTSB CEN21LA319](https://openairdocs.org/ntsb/CEN21LA319.md): Air Tractor AT-401 · Carroll, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2021 · N7315P · Substantial damage
  > The wear-related failure of the airframe fuel boost pump, which resulted in fuel starvation and a loss of engine power.
- [NTSB ENG21WA028](https://openairdocs.org/ntsb/ENG21WA028.md): Boeing 787 · London, United Kingdom · Accident · Minor injuries · Class 5 · Foreign · Jun 18, 2021 · G-ZBJB · Minor damage
- [NTSB CEN21FA272](https://openairdocs.org/ntsb/CEN21FA272.md): Antenor Velazco Lancair Evolution · Parker, CO · Accident · 2 fatal · Class 3 · Field · Final report · Jun 16, 2021 · N704AK · Destroyed
  > The pilot’s diversion of attention following an asymmetric flap deployment, which resulted in a descent and collision with powerlines. Contributing to the accident was maintenance personnel’s failure to properly secure the flap control rod attachment bolts,…
- [NTSB ERA21LA250](https://openairdocs.org/ntsb/ERA21LA250.md): Diamond DA20 · Matthews, VA · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 14, 2021 · N458MA · Substantial damage
  > The mechanic’s failure to properly secure the oil sump drain plug during a 100-hour maintenance inspection, which resulted in a total loss of engine power due to oil starvation.
- [NTSB CEN21LA267](https://openairdocs.org/ntsb/CEN21LA267.md): Great Lakes 2T-1A-1 · Roanoke, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 14, 2021 · N503GL · Substantial damage
  > Inadequate maintenance of the brake system which resulted in the caliper binding closed and the subsequent loss of directional control during the landing roll.
- [NTSB CEN21LA243](https://openairdocs.org/ntsb/CEN21LA243.md): Phillips Ralph W Vans RV8 · San Angelo, TX · Accident · Serious injuries · Class 3 · Limited · Final report · May 27, 2021 · N274CV · Substantial damage
  > The loss of engine power due to fuel starvation. Contributing to the accident was the installation of a reduced flow fitting in the fuel line to the carburetor by maintenance personnel.
- [NTSB ERA21FA224](https://openairdocs.org/ntsb/ERA21FA224.md): Piper PA-31P · Myrtle Beach, SC · Accident · 1 fatal · Class 3 · Field · Final report · May 21, 2021 · N575BC · Destroyed
  > The mechanic’s inadvertent installation of the elevator trim tabs in reverse, which resulted in the pitch trim system operating opposite of the pilot’s input and the pilot’s subsequent loss of control.
- [NTSB CEN21LA218](https://openairdocs.org/ntsb/CEN21LA218.md): Cessna R182 · Tulsa, OK · Accident · No injuries · Class 4 · Limited · Final report · May 13, 2021 · N8051B · Substantial damage
  > The pilot’s inability to extend the main landing gear due to incomplete maintenance, which resulted in a partial wheels-up landing and the mechanic’s failure to follow proper maintenance procedures that led to the loss of main landing gear system hydraulic…
- [NTSB ANC21LA040](https://openairdocs.org/ntsb/ANC21LA040.md): Piper PA-18-105 Special · Gakona, AK · Accident · No injuries · Class 4 · Limited · Final report · May 10, 2021 · N5489H · Substantial damage
  > The pilot’s decision to initiate a flight with a failed mixture control cable which resulted in a total loss of engine power.
- [NTSB WPR21LA161](https://openairdocs.org/ntsb/WPR21LA161.md): Rans S12 · Colville, WA · Accident · 2 fatal · Class 3 · Limited · Final report · Apr 17, 2021 · N707PH · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering to avoid powerlines, which resulted in an aerodynamic stall and a loss of control. Contributing to the accident was the partial loss of engine power due to improper…
- [NTSB CEN21LA194](https://openairdocs.org/ntsb/CEN21LA194.md): Cessna A185F · North Vernon, IN · Accident · No injuries · Class 3 · Limited · Final report · Apr 17, 2021 · N19D · Substantial damage
  > The pilot’s improper installation of the fuel selector handle, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB CEN21LA187](https://openairdocs.org/ntsb/CEN21LA187.md): Eurocopter EC120 · LeRoy, KS · Accident · No injuries · Class 3 · Limited · Final report · Apr 9, 2021 · N421PB · Substantial damage
  > The contamination of the fuel injection manifold filter due to improper maintenance, resulting in a partial loss of engine power during cruise flight. Contributing to the accident was the pilot’s delayed autorotation, which resulted in insufficient main rotor…
- [NTSB CEN21LA138](https://openairdocs.org/ntsb/CEN21LA138.md): Cessna 182F · Millville, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 24, 2021 · N3209U · Substantial damage
  > The inadequate maintenance/inspection of the airplane, which resulted in a total loss of engine power due to oil starvation.
- [NTSB ERA21LA114](https://openairdocs.org/ntsb/ERA21LA114.md): Aviat A1 · Terrell, NC · Accident · Minor injuries · Class 4 · Limited · Final report · Jan 23, 2021 · N480F · Substantial damage
  > The pilot’s failure to retract the landing gear on the amphibious airplane prior to a water landing, resulting in a nose over and structural damage to the airframe. The mechanic’s failure to remove electrical tape from the pitot tube, the pilot’s inadequate…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 2021
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '040' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/040/sequence?year=2021

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