ANC91FA132

NTSB accident investigation · Cessna 172 · Eklutna Lake, AK · August 23, 1991

Accident · FatalField investigationFinal report
Date
August 22, 1991, 19:40 local (Aug 23, 1991, 03:40 UTC)
Place
Eklutna Lake, AK
Injuries
3 fatal, 1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N98785Cessna 172
Weather
Visual (VMC) · Day
Status
Completed · report March 24, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19910822036559A
Case key
5489

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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Probable cause

The pilot's failure to maintain terrain clearance. Contributing to the accident was the high terrain.

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.

In flight collision with terrain/waterManeuvering
Terrain condition - high terrainFactor
Clearance - not maintainedPilot in commandCause

Analysis

The airplane struck the mountain at the 3,750 foot level while on a sightseeing trip looking for mountain sheep. The pilot and two passengers were fatally injured, and one passenger received serious injuries. The passenger stated that they were flying below the ridgeline when they struck the mountain.

Aircraft

Registration
N98785
Reported as
Cessna 172
Category
Airplane
Serial number
17276352
Airframe hours
4,467
Engine
Lycoming O-320-D2J, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 16, 1991 · 20 hours before
Departed
MRI · Anchorage, AK
Flight plan
Company VFR

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
22
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Toxicology
Performed
Flight hours
950 total · 230 in this make and model · 880 as pilot in command · 40 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 50 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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