# Accident 19971108032649A: Waco YMF, Sedona, AZ, November 8, 1997

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 8, 1997, 12:12 local time
- Place: Sedona, AZ
- Damage: Destroyed
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 34.9409° N, 111.9392° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=34.9409&lon=-111.9392&mi=10
- Aircraft: N369DP, a cancelled registration (https://openairdocs.org/deregistered/N369DP-1998-06-12) (OpenAirDocs)
- Registry model: Waco YMF (registry code 9600411, https://openairdocs.org/model/waco-ymf) (OpenAirDocs)
- Reported make and model: WACO YMF
- Reported engine: JACOBP R755B2
- Fatal injuries: 0
- Pilot flight hours: 4,700 total, 1,600 in this make and model, 148 in the last 90 days
- NTSB investigation: [NTSB LAX98LA033](https://openairdocs.org/ntsb/LAX98LA033) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19971108032649A

## Narrative

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

SIGHTSEEING FLIGHT. PROP ASSEMBLY SEPERATED. CRASH LANDED. (FROM .4) THE PILOT REPORTED THAT DURING THE PREFLIGHT INSPECTION, HE EXAMINED THE PROPELLER WHILE PULLING THE ENGINE THROUGH EACH CYCLINDER AND FOUND NO DISCREPANCIES.  THE AIRCRAFT WAS ABOUT 7 MINUTES INTO A 15-MINUTE FLIGHT WHEN HE SAW A 'SPARK OR FLASH' AT THE 11 O'CLOCK POSITION ON THE NOSE, FOLLOWED QUICKLY BY THE COMPLETE SEPARATION OF THE PROPELLER.  HE TURNED THE AIRCRAFT BACK TOWARD THE AIRPORT BUT HAD INSUFFICIENT ALTITUDE AND LANDED IN A HILLY AREA OF A CANYON.  A POSTCRASH FIRE BEGAN AND CONSUMED THE AIRCRAFT AFT OF THE FIREWALL.  THE AIRCRAFT WAS EXAMINED ON SITE AND FOLLOWING RECOVERY OF THE WRECKAGE.  AN UNSUCCESSFUL SEARCH WAS MADE FOR THE WOODEN PROPELLER.  THE METAL PROPELLER HUB REMAINED ATTACHED TO THE ENGINE CRANKSHAFT WITH FRAGMENTS OF THE WOOD CENTER SECTION INTERTWINED IN THE BOLTS.  THE WOOD REMAINS WERE INSUFFICIENT TO DETERMINE EITHER THE MODEL OR SERIAL NUMBER OF THE PROPELLER, OR THE CONDITION OF THE BOLTHOLES.  BOTH THE ENGINE CRANKSHAFT SPLINES AND PROPELLER HUB SPLINES WERE UNREMARKABLE.  THE REMAINING PIECES OF WOOD FROM THE HUB WERE SUBMITTED FOR LABORATORY EVALUATION.  THE EXAMINING LABO RATORIES REPORTED THAT THERE WAS INSUFFICIENT EVIDENCE AVAILABLE FROM THE SMALL FRAGMENTS SUBMITTED TO IDENTIFY AN INITIATING EVENT IN THE PROPELLER OR THE FAILURE CAUSE OF THE WOOD HUB.

## 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 LAX98LA033](https://openairdocs.org/ntsb/LAX98LA033), Nov 8, 1997: Waco YMF-5 (N369DP), Sedona, AZ, destroyed. Probable cause: The failure and separation of the propeller for undetermined reasons.

## Other reports on N369DP (1)

Matched to the same aircraft by N-number and date.

- [Accident 19931102042079A](https://openairdocs.org/incident/19931102042079A), Nov 2, 1993: Waco YMF (N369DP), Valparaiso, IN, Substantial damage. Lost direction control landing tailwheel type. Ground looped and flipped over. Minimum flying time in type.

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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