# Accident 20001011043839A: Amrgen AA1A, Philadelphia, PA, October 11, 2000

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 11, 2000, 06:14 local time
- Place: Philadelphia, PA
- Airport: Northeast Philadelphia
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 40.0667° N, 75.0000° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.0667&lon=-75.0000&mi=10
- Aircraft: N9394L, a cancelled registration (https://openairdocs.org/deregistered/N9394L-2004-03-15) (OpenAirDocs)
- Registry model: American AA-1A (registry code 0630710, https://openairdocs.org/model/american-aa-1a) (OpenAirDocs)
- Registry engine: Lycoming 0-235 series (registry code 41505, https://openairdocs.org/engine/lycoming-0-235-series) (OpenAirDocs)
- Reported make and model: AMRGEN AA1A
- Reported engine: LYC O235C2C
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 2,000 total, 1,500 in this make and model, 300 in the last 90 days
- NTSB investigation: [NTSB IAD01LA002](https://openairdocs.org/ntsb/IAD01LA002) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20001011043839A

## Narrative

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

(-23) AIRCRAFT EXPERIENCED ROUGH ENGINE OPERATION AS STATED BY PILOT JUST AFTER LEAVING PNE AIRSPACE. ENGINE RPM BEGAN DECREASING AND AIRCRAFT BEGAN A SLOW DESCENT. PILOT STATED HE WAS UNABLE TO MAINTAIN ALTITUDE. HE THEN CONTACTED PNE AIRPORT AND STATED HE WAS INBOUND WITH MECHANICAL DIFFICULTIES. UNABLE TO MAKE AIRPORT PILOT DECIDED TO LAND IN A VACANT PARK. PILOT STATED THAT THE ENGINE HAD MADE A LOUD POPPING NOISE PRIOR TO LANDING AND THE PROP STOPPED ROTATING. THE AIRCRAFT TOUCHED DOWN AT APPROXIMATELY 396 FT. PRIOR TO IMPACTING A TREE WITH HIS LEFT WINGTIP AND STRIKING A LARGE WROUGHT IRON FENCE WHERE AIRCRAFT CAME TO REST AT ABOUT A 30 DEGREE INCLINE ON FENCE POSTS. THERE WAS SUBSTANTIAL DAMAGE TO THE AIRCRAFT. BOTH WINGS WERE SEPARATED FROM THE FUSELAGE, LEFT WING SHEARED SPAR. PROP SPINNER AND HUB WERE SEVERELY DAMAGED, PROP BLADES HAD MINOR SCORING FROM FENCE. UPPER AND LOWER COWLING HAD SUBSTANTIAL DAMAGE. RIGHT UPPER ENGINE MOUNT WAS BENT AND FIREWALL DAMAGE. NO OIL REGISTERED ON DIP STICK. BELLY OF AIRCRAFT WAS STREAKED IN OIL TO TAIL.

## 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 IAD01LA002](https://openairdocs.org/ntsb/IAD01LA002), Oct 11, 2000: American AA-1A (N9394L), Philadelphia, PA, substantial damage. Probable cause: A hole in the #4 piston for undetermined reasons which resulted in engine oil starvation and engine stoppage.

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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