# NTSB investigations: Boeing 747-451

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 ENG17IA026](https://openairdocs.org/ntsb/ENG17IA026.md): Boeing 747 451 · Tokyo, Japan · Incident · No injuries · Incident investigation · Final report · Jun 7, 2017 · N668US · No damage
  > The PW4056 engine lost power due to the fatigue fracture of a 5th stage compressor blade. The cause of the fatigue fracture could not be determined.
- [NTSB ENG16IA001](https://openairdocs.org/ntsb/ENG16IA001.md): Boeing 747 · Russian airspace, Japan · Incident · No injuries · Incident investigation · Final report · Oct 2, 2015 · N662US · Minor damage
  > The PW4056 engine experienced an in-flight loss of power because of damage to the low-pressure turbine (LPT) because of the inadequate overhaul inspection and repair instructions that existed at the time of the LPT module's last overhaul. A vane hook in the…
- [NTSB ENG14IA027](https://openairdocs.org/ntsb/ENG14IA027.md): Boeing 747 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · Sep 21, 2014 · N669US · No damage
  > Turbine Overhaul Service's aggressive grit blasting and incomplete masking of the blade root neck that allowed the no grit blast area being exposed during the overhaul of the blade resulting in blasting media being embedded in the blade root from which a…
- [NTSB ENG12IA003](https://openairdocs.org/ntsb/ENG12IA003.md): Boeing 747-451 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Oct 23, 2011 · N661US · Minor damage
  > The penetration of turbine blade fragments through the rear turbine case, which punctured the No. 4 bearing oil pressure supply tube, allowing misted oil to contact the hot engine case and ignite the undercowl fire. Contributing to the incident was the…
- [NTSB DCA09WA029](https://openairdocs.org/ntsb/DCA09WA029.md): Boeing 747 · Tokyo, Japan · Accident · Serious injuries · Foreign investigation · Feb 20, 2009 · N676NW · No damage
- [NTSB ANC03IA001](https://openairdocs.org/ntsb/ANC03IA001.md): Boeing 747-400 · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Oct 10, 2002 · N661US · No damage
  > The fatigue fracture of the lower rudder power control module manifold, which resulted in a lower rudder hardover.
- [NTSB DCA01WA045](https://openairdocs.org/ntsb/DCA01WA045.md): Boeing B-747-400 · Tokyo, Japan · Incident · No injuries · Foreign investigation · Jun 5, 2001 · N663US · Minor damage

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1384940'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1384940

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.