# Accident 19990717009129A: Piper PA32R300, Mammoth Lakes, CA, July 17, 1999 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: July 17, 1999, 13:17 local time - Place: Mammoth Lakes, CA - Airport: Mammoth - June Lakes - Damage: Substantial damage - Phase of flight: Forced/Precautionary Landing - Operating rules: General operating rules (Part 91) - Location: 37.5805° N, 118.8406° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=37.5805&lon=-118.8406&mi=10 - Aircraft: N1692H, a cancelled registration (https://openairdocs.org/deregistered/N1692H-2000-05-03) (OpenAirDocs) - Registry model: Piper PA-32R-300 (registry code 7103213, https://openairdocs.org/model/piper-pa-32r-300) (OpenAirDocs) - Reported make and model: PIPER PA32R300 - Reported engine: LYC IO540K1G5D - People aboard: 2 - Fatal injuries: 0 - Pilot flight hours: 1,280 total, 12 in this make and model, 12 in the last 90 days - NTSB investigation: [NTSB LAX99LA254](https://openairdocs.org/ntsb/LAX99LA254) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/19990717009129A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. PILOT REPORTED "PILOT ERROR", CRASHED IN A FIELD. (.19)ON JULY 17, 1999, AT 1317 HOURS PACIFIC DAYLIGHT TIME, A PIPER PA32R-300, N1692H, SUSTAINED SUBSTANTIAL DAMAGE WHEN IT COLLIDED WITH TERRAIN DURING TAKEOFF FROM MAMMOTH LAKES CALIFORNIA. THE COMMERCIAL PILOT/OWNER AND HIS PASSENGER WERE NOT INJURED. THE PERSONAL FLIGHT WAS OPERATED UNDER THE PROVISIONS OF 14 CRR PART 91. THE PILOT DEPARTED MAMMOTH LAKES 1 TO 2 MINUTES PRIOR TO THE ACCIDENT EN ROUTE TO OXNARD, CALIFORNIA. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AND A VFR FLIGHT PLAN WAS FILED, BUT NOT YET ACTIVATED. THE PILOT STATED HE FLEW INTO MAMMOTH LAKES THE DAY BEFORE THE ACCIDENT. HE WAS PLANNING TO FLY TO OXNARD AND THEN ON TO MONTERREY, CALIFORNIA, WHERE THE AIRPLANE WAS BASED. HE ADDED FULL FUEL PRIOR TO DEPARTURE. THE AIRPLANE WOULD NOT CLIMB AND HE MAINTAINED A CONTROLLED DESCENT INTO THE TERRAIN. THE PILOT FELT THE DENSITY ALTITUDE PREVENTED THE AIRPLANE FROM CLIMBING. THE AIRPORT FACILITIES/DIRECTORY INDICATED MOMMOTH LAKES HAD AN ELEVATION OF 7,128 FEET SML (MEAN SEA LEVEL). AN AVIATION ROUTINE WEATHER REPORT (METAR) ISSUED FOR MAMMOTH LAKES AT 1251 INDICATED THE TEMPERATURE WAS 73 DEGREES FAHRENH EIT. (-23) AIRCRAFT HAD TWO PEOPLE ON BOARD AND FULL FUEL. AIRCRAFT DEPARTED MAMMOTH LAKE AIRPORT AT 1713 PDT. PILOT COULD NOT MAINTAIN CLIMB DUE TO DENSITY ALTITUDE. AIRCRAFT CRASHED TWO MILES NORTHWEST OF AIRPORT. AIRCRAFT WAS DESTROYED. (.4)ON JULY 17, 1999, AT 1317 HOURS PACIFIC DAYLIGHT TIME, A PIPER PA32R-300, N1692H, SUSTAINED SUBSTANTIAL DAMAGE WHEN IT COLLIDED WITH TERRAIN DURING THE TAKEOFF INITIAL CLIMB FROM THE MAMMOTH LAKES, CALIFORNIA, AIRPORT. THE COMMERCIAL PILOT AND HIS PASSENGER WERE NOT INJURED. THE AIRPLANE WAS OWNED AND OPERATED BY THE PILOT UNDER THE PROVISIONS OF 14 CFR PART 91 FOR A CROSS-COUNTRY PERSONAL FLIGHT. THE PILOT DEPARTED MAMMOTH LAKES 3 TO 4 MINUTES PRIOR TO THE ACCIDENT EN ROUTE TO OXNARD, CALIFORNIA. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AND A VFR FLIGHT PLAN WAS FILED, BUT NOT YET ACTIVATED. THE PILOT STATED HE FLEW INTO MAMMOTH LAKES THE DAY BEFORE THE ACCIDENT. HE WAS PLANNING TO FLY TO OXNARD AND THEN ON TO MONTERREY, CALIFORNIA, WHERE THE AIRPLANE WAS BASED. HE ADDED FULL FUEL PRIOR TO DEPARTURE. THE PILOT LISTENED TO THE AWOS (AUTOMATED WEATHER OBSERVING SYSTEM), WHICH REPORT ED A DENSITY ALTITUDE OF 9,400 FEET. HE REVIEWED THE PROCEDURES FOR A HIGH ALTITUDE TAKEOFF, COMPLETED AN ENGINE RUN UP, AND LEANED FOR DEPARTURE. AFTER TAXIING INTO POSITION FOR TAKEOFF, HE APPLIED THE BRAKES, THEN POWER. THE PILOT STATED THE RUNWAY WAS SLIGHTLY UPHILL AND HE DID NOT FEEL THE AIRPLANE WAS DEVELOPING FULL POWER, BUT DID NOT ABORT THE TAKEOFF. THE AIRPLANE CLIMBED APPROXIMATELY 200 FEET, BUT WOULD NOT CLIMB HIGHER. AFTER DECIDING AN ATTEMPT TO TURN COULD INDUCE A STALL, THE PILOT LOWERED THE LANDING GEAR AND AIRSPEED AS MUCH AS POSSIBLE. HE MAINTAINED A CONTROLLED DESCENT INTO THE TERRAIN AND ESTIMATED HIS SPEED AT TOUCHDOWN WAS 50 TO 60 KNOTS. THE PILOT SAID HE FELT THE DENSITY ALTITUDE PREVENTED THE AIRPLANE FROM CLIMBING. THE AIRPORT FACILITIES/DIRECTORY INDICATED MAMMOTH LAKES HAD AN ELEVATION OF 7,128 FEET MSL (MEAN SEA LEVEL). AN AVIATION ROUTINE WEATHER REPORT (METAR) ISSUED FOR MAMMOTH LAKES AT 1251 REPORTED THE TEMPERATURE WAS 73 DEGREES FAHRENHEIT AND THE ALTIMETER SETTING WAS 30.22 INHG. ## 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 LAX99LA254](https://openairdocs.org/ntsb/LAX99LA254), Jul 17, 1999: Piper PA32R-300 (N1692H), Mammoth Lakes, CA, substantial damage. Probable cause: The pilot's failure to attain and maintain an adequate airspeed for the prevailing density altitude. The pilot's failure to abort the takeoff is also causal. 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. --- 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.