# NTSB investigations, NJ: 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 ENG23LA045](https://openairdocs.org/ntsb/ENG23LA045.md): Bell 407 · Linden, NJ · Incident · Class 3 · Limited · Final report · Sep 21, 2023 · N406TD · No damage
  > The fracture of the upper-left tail boom attachment bolt due to abnormal loading of the bolt caused by a gap and misalignment between the upper-left longeron and the tail boom. Contributing to this incident was the lack of a check to verify the absence of…
- [NTSB ERA23LA225](https://openairdocs.org/ntsb/ERA23LA225.md): Mooney M20K · Hillsborough Township, NJ · Accident · Minor injuries · Class 3 · Limited · Final report · May 6, 2023 · N262MK · Substantial damage
  > The partial loss of engine power due to maintenance personnel’s failure to ensure that the ignition harnesses were properly secured and the pilot’s inappropriate pitch control inputs, which resulted in the airplane exceeding its critical angle of attack and…
- [NTSB ERA19LA062](https://openairdocs.org/ntsb/ERA19LA062.md): Mooney M20K · Paramus, NJ · Accident · Minor injuries · Limited investigation · Final report · Dec 9, 2018 · N5756W · Substantial damage
  > Maintenance personnel's improper assembly of the engine during overhaul, which resulted in lubrication restriction due to a bearing shift and the subsequent engine failure.
- [NTSB ERA18FA138](https://openairdocs.org/ntsb/ERA18FA138.md): Piper PA32 · West Milford, NJ · Accident · 1 fatal · Field investigation · Final report · May 2, 2018 · N4153R · Destroyed
  > An in-flight fire and total loss of engine power after takeoff due to a loose fuel line. Contributing to the accident was the installation of an unapproved fuel line by unknown personnel.
- [NTSB ERA17LA116](https://openairdocs.org/ntsb/ERA17LA116.md): Robinson Helicopter R44 · Chatham, NJ · Accident · Serious injuries · Limited investigation · Final report · Feb 24, 2017 · N44EK · Substantial damage
  > Maintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears of the engine and a subsequent loss of power.
- [NTSB ERA17LA110](https://openairdocs.org/ntsb/ERA17LA110.md): Piper PA28R · Bayonne, NJ · Accident · Serious injuries · Limited investigation · Final report · Feb 19, 2017 · N15745 · Substantial damage
  > Maintenance personnel’s incorrect installation of the No. 3 cylinder’s hydraulic valve tappet plunger, which resulted in a failure of the No. 3 cylinder’s intake valve and the subsequent partial loss of engine power.
- [NTSB ERA16LA153](https://openairdocs.org/ntsb/ERA16LA153.md): Butterhof Anthony J Ginny B · South Harrison Township, NJ · Accident · Minor injuries · Limited investigation · Final report · Apr 2, 2016 · N349E · Substantial damage
  > The pilot/mechanic's failure to safety-wire the gascolator bale clamp, which resulted in a fuel leak and subsequent total loss of engine power.
- [NTSB ERA15LA263](https://openairdocs.org/ntsb/ERA15LA263.md): Cessna 210 5A(205A) · Stafford Twp, NJ · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2015 · N315EC · Substantial damage
  > The total loss of engine power due to the failure of the crankshaft, which resulted from a mechanic's failure to properly torque the engine cylinder through bolts.
- [NTSB ERA09LA163](https://openairdocs.org/ntsb/ERA09LA163.md): Piper PA28 · Pittstown, NJ · Accident · Serious injuries · Limited investigation · Final report · Feb 11, 2009 · N55854 · Substantial damage
  > A loss of engine power due to the improper tightening of a fuel hose B-nut by maintenance personnel during engine installation.

## 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 c."eventStateOrRegion" = 'NJ' AND c."eventCountry" = 'USA'
  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?state=NJ

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