# Accident 19980919034799A: Piper PA22150, Thornton, CO, September 19, 1998

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 19, 1998
- Place: Thornton, CO
- Damage: Destroyed
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 39.8591° N, 104.9592° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.8591&lon=-104.9592&mi=10
- Aircraft: N6028D, a cancelled registration (https://openairdocs.org/deregistered/N6028D-2014-10-29) (OpenAirDocs)
- Registry model: Piper PA-22-150 (registry code 7102210, https://openairdocs.org/model/piper-pa-22-150) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: PIPER PA22150
- Fatal injuries: 0
- NTSB investigation: [NTSB FTW98FA392](https://openairdocs.org/ntsb/FTW98FA392) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19980919034799A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AIRCRAFT WAS DESTROYED DURING EMERGENCY LANDING WHICH FOLLOWED A POWER FAILURE. PILOT SUSTAINED SERIOUS INJURIES.  PILOT REPORTED THAT ENGINE WAS SECURED FOLLOWING LOUD BANG WITH VERY STRONG VIBRATIONS.  INVESTIGATION AT ACCIDENT SCENE BY NTSB INVESTIGATOR MR. NORMAN WIEMEYER, WAS UNABLE TO LOCATE 18 INCH PIECE OF ONE PROPELLER BLADE.  AIRCRAFT ENGINE WAS ANALYZED BY LYCOMING, FAA, NTSB DURING "TEAR DOWN" PROCEDURES AND WAS FOUND TO BE OPERATIONAL.  ANALYSIS OF PROPELLER REVEALED SECTION MISSING.  BLADE DAMAGE WAS NOT A RESULT OF IMPACT DAMAGE.  ALL INVESTIGATORS AGREE THAT STRESS FRACTURE APPARENTLY CAUSED PORTION OF PROPELLER TO DEPART CAUSING RESULT IN POWER LOSS AND SUBSEQUENT CRASH DURING EMERGENCY LANDING.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW98FA392](https://openairdocs.org/ntsb/FTW98FA392), Sep 19, 1998: Piper PA-20-180 (N6028D), Thornton, CO, destroyed. Probable cause: The separation of a propeller blade due to corrosion initiated fatigue, followed by the separation of several of the engine's mounts, and the subsequent inability of the pilot to control the…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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