DCA82AA015

NTSB accident investigation · Nihon YS-11A · King Salmon, AK · February 16, 1982

Accident · Minor injuriesFinal report
Date
February 16, 1982, 09:05 local (13:05 UTC)
Place
King Salmon, AK
Injuries
3 minor, 36 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N169RVNihon YS-11A
Weather
Visual (VMC) · Day
Status
Completed · report February 16, 1983
Report
Board-adopted at Board Meeting
NTSB office
Major Investigations Division
Safety recommendations
Yes
FAA report
19820216002259A
Case key
71268

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(partial) - nonmechanicalApproach
Weather condition - temperature extremesFactor
Fluid,fuel - iceFactor
Fuel system,filter - blocked(total)Factor
Fluid,fuel - starvationFactor
Emergency procedure - performedPilot in command
Acft/equip,inadequate aircraft manualsManufacturerFactor
Loss of engine power(total) - mech failure/malfApproach - vfr pattern - final approach
Reason for occurrence undeterminedCause
Fluid,fuel - other
Turbine assembly - overtemperature
Aircraft performance,two or more engines - inoperative
Forced landingLanding - flare/touchdown
In flight collision with terrain/waterLanding - flare/touchdown
Wheels up landing - intentionalPilot in command
Terrain condition - icy
Miscellaneous/otherStanding
Instructions,written/verbal - inadequateCompany/operator managementFactor
Interpretation of instructions - inadequatePassengerFactor

Analysis

The acft was on a scheduled flt from anchorage to cold bay, AK with intermediate stops at King Salmon & dutch harbor, AK. En route between anchorage & King Salmon, the air temps at cruise altitude were between -36 & -40 deg fahrenheit. While entering donwnd to lnd at King Salmon, the before-lndg check was made which included turning off the fuel heaters. Shortly thereafter, the r engine lost pwr & would not restart. The r engine was feathered & secured. Soon after that, while turning to final apch with the gear down, the l engine began losing pwr. The captain elected to land on a frzn river & called for the gear to be retracted. While lndg, the acft touched down before the gear was fully retracted. An investigation revealed all 3 turbine stages of the l engine were damaged from overheating, indicative to excess fuel flow. Except for the l engine overheating, no other mechanical defects were found with either engine. However, entrainedwater (wtr in solution) can occur in jet fuel. Water (29 to 150 ppm) was found in fuel samples. Conds for ice, present.

Aircraft

Registration
N169RV
Reported as
Nihon YS-11A
Category
Airplane
Serial number
2169
Airframe hours
4,395
Engine
Rolls-Royce 542-10K, 1,990 horsepower, turbo prop
Damage
Substantial damage
Fire
Both
Flight
Part 121
Operator
Reeve Aleutian
Registered owner
Reeve Aleutian
Departed
C · Anchorage, AK
Destination
C · Cold Bay, AK
Flight plan
IFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
45
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Flight hours
11,589 total · 4,177 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 12 knots
Visibility
15 statute miles
Temperature
59 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.