19970719019039A

Accident · Substantial damage

FAA accident report · Dhav DHC2MK1 · Alaknek River, AK · July 19, 1997

Date: July 19, 1997 · 08:45 local
Place: Alaknek River, AK
Phase of flight: To Init Climb(1st Pwr Reduct)
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N68084
NTSB investigation: NTSBANC97LA106
Reported as: Dhav DHC2MK1
Reported engine: Pratt & Whitney R985*
People aboard: 2
Fatal injuries: 0
Pilot’s flight hours: 10,000 total350 in this make and model

N68084Registered now · Boeing 757-258S/N 25036 Airframe modelBoeing 757-258

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Aircraft crashed on takeoff. (.4)the pilot was making a no-wind takeoff downstream from a 4,000-foot slow flowing River. The takeoff water run for the conditions was calculated at 1,300 feet. The pilot and passenger both reported a partial loss of engine RPM just prior to lift-off from the water. According to the pilot, there was insufficient stopping distance before reaching a River bank. The pilot rotated the airplane off the water below flying speed, cleared the bank, and settled back into the tundra. The pilot stated that a similar loss of engine RPM had happened before, but was considered transient.

As the FAA filed it

AIRCRAFT CRASHED ON TAKEOFF. (.4)THE PILOT WAS MAKING A NO-WIND TAKEOFF DOWNSTREAM FROM A 4,000-FOOT SLOW FLOWING RIVER. THE TAKEOFF WATER RUN FOR THE CONDITIONS WAS CALCULATED AT 1,300 FEET. THE PILOT AND PASSENGER BOTH REPORTED A PARTIAL LOSS OF ENGINE RPM JUST PRIOR TO LIFT-OFF FROM THE WATER. ACCORDING TO THE PILOT, THERE WAS INSUFFICIENT STOPPING DISTANCE BEFORE REACHING A RIVER BANK. THE PILOT ROTATED THE AIRPLANE OFF THE WATER BELOW FLYING SPEED, CLEARED THE BANK, AND SETTLED BACK INTO THE TUNDRA. THE PILOT STATED THAT A SIMILAR LOSS OF ENGINE RPM HAD HAPPENED BEFORE, BUT WAS CONSIDERED TRANSIENT.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB ANC97LA106Accident · No injuriesLimited investigationFinal reportAlagnak River, AKA partial loss of engine power for an undetermined reason, and the pilot's intentional operation of the airplane with known deficiencies.Jul 19, 1997 · Substantial damage

Other reports on N68084 · 1

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

Accident 19790611011439AStuart Island, CNPilots body and parts of the airplane floats recovered from river. No other information available.Jun 11, 1979 · Reported as Dhav DHC2/ · Destroyed