# Accident 19970411005789A: Piper PA18150, Manokotak, AK, April 11, 1997 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: April 11, 1997, 15:00 local time - Place: Manokotak, AK - Damage: Destroyed - Phase of flight: Unauth Low Level Opns - Operating rules: General operating rules (Part 91) - Location: 58.8809° N, 158.9290° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=58.8809&lon=-158.9290&mi=10 - Aircraft: N8071D, a cancelled registration (https://openairdocs.org/deregistered/N8071D-2018-01-29) (OpenAirDocs) - Registry model: Piper PA-18-150 (registry code 7101828, https://openairdocs.org/model/piper-pa-18-150) (OpenAirDocs) - Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs) - Reported make and model: PIPER PA18150 - Reported engine: LYC O320A2A - People aboard: 2 - Fatal injuries: 2 - Pilot flight hours: 175 total - NTSB investigation: [NTSB ANC97LA054](https://openairdocs.org/ntsb/ANC97LA054) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/19970411005789A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. (FROM 19) ON APRIL 11, 1997, ABOUT 1500 ALASKA DAYLIGHT TIME, A TUNDRA TIRE EQUIPPED PIPER PA-18-150 AIRPLANE, N8071D, WAS DESTROYED BY IMPACT FORCES AND A POSTIMPACT FIRE, WHEN IT COLLIDED WITH TERRAIN ABOUT NINE MILES SOUTH OF MANOKOTAK, ALASKA. THE PRIVATE PILOT AND THE ONE PASSENGER ABOARD WERE FATALLY INJURED. THE LOCAL FLIGHT OPERATED IN VISUAL METEOROLOGICAL CONDITIONS WITHOUT A FLIGHT PLAN. THE FLIGHT LAST DEPARTED DILLINGHAM, ALASKA, TIME UNKNOWN. ACCORDING TO A WITNESS WHO WAS RIDING A SNOW MACHINE IN CLOSE PROXIMITY TO THE ACCIDENT SITE, THE AIRPLANE WAS OBSERVED FLYING VERY LOW TO THE GROUND, POSSIBLY BELOW THE TOP OF THE BANKS OF THE IGUSHIK RIVER. THE WITNESS LAST SAW THE AIRPLANE CLIMB QUICKLY, SLOW DOWN, AND BEGIN A LEFT TURN. HE LOST SIGHT OF THE AIRPLANE, BUT SECONDS LATER HEARD A LOUD NOISE AND SAW SMOKE NEAR WHERE HE LAST SAW THE AIRPLANE. HE RODE HIS SNOW MACHINE TO THE ACCIDENT SITE, BUT WAS UNABLE TO APPROACH THE AIRPLANE DUE TO AN INTENSE FIRE. AN FAA INSPECTOR FROM THE ANCHORAGE FLIGHT STANDARDS DISTRICT OFFICE WENT TO THE ACCIDENT SITE ON APRIL 12. UPON ARRIVAL, HE SAID HE SAW THE AIRPLANE CRASHED NOSE DOWN ON NEARLY LEVEL, FROZEN TUNDRA. HE NOTED THE PROPELLER WAS TORN FREE FROM THE ENGINE, AND CAME TO REST ABOUT 20 FEET FROM THE AIRPLANE. HE SAID THE ENGINE APPEARED TO HAVE POWER UPON IMPACT DUE TO THE TORSIONAL LOAD SIGNATURES ON THE PROPELLER. ENGINE AND FLIGHT CONTROLS WERE CHECKED FOR CONTINUITY AND FOUND TO BE FUNCTIONAL. NO EVIDENCE OF ANY PREIMPACT MECHANICAL MALFUNCTION WAS DISCOVERED. NO AIRCRAFT LOG BOOKS WERE AVAILABLE FOR EXAMINATION, AND THE PILOT'S PERSONAL LOGBOOKS WERE NOT LOCATED. ON FEBRUARY 25, 1997, THE PILOT COMPLETED A SECOND CLASS APPLICATION FOR AN FAA AIRMAN'S MEDICAL CERTIFICATE. AT THAT TIME, THE PILOT INDICATED HE HAD 156 TOTAL FLIGHT HOURS, WITH 106 OF THOSE HOURS OBTAINED WITHIN THE PRECEDING SIX MONTHS. ON APRIL 14, AN AUTOPSY WAS PERFORMED BY THE STATE OF ALASKA'S MEDICAL EXAMINER, 5700 EAST TUDOR ROAD, ANCHORAGE, ALASKA. THE EXAMINATION DISCLOSED THE PILOT DIED OF MASSIVE BLUNT TRAUMA. NO EVIDENCE OF ANY SUBSTANTIVE PREEXISTING DISEASE WAS DISCOVERED. TOXICOLOGICAL SAMPLES TAKEN FROM THE PILOT WERE SUBMITTED TO THE FAA'S CIVIL AERO MEDICAL INSTITUTE FOR EXAMINATION. URINE AND KIDNEY FLUID PROVED POSITIVE FOR MARIHUANA DERIVATIVES. A REVIEW OF THE TOXICOLOGICAL RESULTS BY THE STAFF NTSB PHYSICIAN REVEALED THAT IT COULD NOT BE DETERMINED WHAT, IF ANY, EFFECT THE MARIJUANA MAY HAVE HAD ON THE PILOT'S PERFORMANCE, NOR WHEN IT WAS LAST CONSUMED. (FROM .4) THE AIRPLANE WAS FLYING IN A REMOTE AREA. A WITNESS OBSERVED THE AIRPLANE FLYING AT A VERY LOW LEVEL NEAR, OR POSSIBLY BELOW, THE TOPS OF A RIVER BANK. HE SAID HE SAW THE AIRPLANE CLIMB RAPIDLY, SLOW DOWN, AND BEGIN A TURN TO THE LEFT. HE LOST SIGHT OF THE AIRPLANE, BUT, WITHIN A FEW SECONDS, HEARD A LOUD NOISE AND SAW SMOKE IN THE VICINITY WHERE HE HAD LAST SEEN THE AIRPLANE. WHEN HE ARRIVED AT THE ACCIDENT SITE, THE AIRPLANE WAS ON FIRE. POSTACCIDENT INSPECTION OF THE AIRPLANE DISCLOSED NO EVIDENCE OF ANY PREIMPACT MECHANICAL ANOMALIES. ## 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 ANC97LA054](https://openairdocs.org/ntsb/ANC97LA054), Apr 11, 1997: Piper PA-18-150 (N8071D), Manokotak, AK, destroyed, 2 fatal. Probable cause: The pilot's failure to maintain airspeed which resulted in an inadvertent stall of the airplane. A factor associated with the accident was the pilot's performance of a low altitude flight maneuver. 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.