LAX92LA063 · Piper PA34-200T
Piper PA34-200T · Accident: loss of engine power en route
From an unrecorded airport to Q99 · San Martin, CA
Event
- NTSB case
- LAX92LA063
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
Piper PA34-200T
- Aircraft type
- Piper PA34
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N6522F
- Operator
- Ponte, Dennis S. · private individual
- Onboard fatalities
- Unknown
- Route
- From not recordedTo Q99 · San Martin, CA
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- En route · climb to cruise
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of engine power
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Tree(s)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Compensation for wind conditions, inadequate
- Pilot in command › Directional control, not maintained
- Pilot in command › Emergency procedure, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
A TWIN ENGINE PIPER PA 34-200T COLLIDED WITH TREES IN HILLY TERRAIN 8 MILES SOUTHWEST OF THE AIRPORT AFTER TAKING OFF IN FOGGY CONDITIONS. THE NONMULTIENGINE/INSTRUMENT RATED CERTIFICATED PRIVATE PILOT REPORTED HE LOST POWER IN THE LEFT ENGINE AND DID NOT PERFORM THE EMERGENCY PROCEDURES FOR THE LOSS OF ENGINE POWER. EXAMINATION OF THE ENGINE DID NOT REVEAL ANY MECHANICAL FAILURES OR MALFUNCTIONS. SUBSEQUENT INVESTIGATION OF THE PILOT REVEALED THAT HIS MEDICAL CERTIFICATE HAD EXPIRED, HE DID NOT HAVE A AIRPLANE MULTI-ENGINE CLASS RATING, AN INSTRUMENT AIRPLANE RATING OR PROOF OF A CURRENT BIENNIAL FLIGHT REVIEW. REVIEW OF THE PILOT'S AIRMEN RECORDS, RETAINED BY THE FAA IN OKLAHOMA CITY, OKLAHOMA, REVEALED THREE PREVIOUS SUSPENSIONS OF THE PILOT'S PRIVATE PILOT CERTIFICATE FOR VIOLATIONS OF THE FEDERAL AVIATION REGULATIONS. THE MOST RECENT THIRD CLASS MEDICAL CERTIFICATE WAS ISSUED TO THE PILOT ON MAY 4, 1983, AND HAD EXPIRED.
Probable cause
THE FAILURE OF THE NONMULTIENGINE/INSTRUMENT RATED PILOT IN COMMAND TO ACCOMPLISH THE PROPER EMERGENCY PROCEDURE DURING A LOSS OF ENGINE POWER. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S IMPROPER TRAINING, LACK OF INSTRUMENT EXPERIENCE, HEAVY FOG REPORTED IN THE ACCIDENT AREA AT THE TIME OF THE ACCIDENT AND THE UNDETERMINED LOSS OF POWER.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX92LA063
- Event ID
- 20001212X18620
- Case number
- LAX92LA063
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 8200887e2bb3bcb20dab2e7ea5fc7c8c38ef3fb15ac6f8bf715741a1c451530f; retrieved 2026-09-21T15:11:38.582Z.