ANC94LA012

NTSB accident investigation · Piper PA-18 · Haines, AK · October 5, 1993

Accident · No injuriesLimited investigationFinal report
Date
October 5, 1993, 17:15 local (21:15 UTC)
Place
Haines, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N5285JPiper PA-18
Weather
Visual (VMC) · Night/dark
Status
Completed · report May 23, 1994
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19931005040139A
Case key
2469

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

On this page

Probable cause

Fatigue failure in a weld on the right main landing gear oleo strut tubing.

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.

Main gear collapsedLanding - flare/touchdown
Landing gear,main gear strut - fatigueCause

Analysis

The pilot reported that he flared about 3 feet above the ground, then he 'cut' the throttle & the airplane 'dropped' onto the tundra. Both landing gear assemblies collapsed as the airplane touched down. The pilot reported there was a fracture in the welded section of the right oleo strut tubing. The airplane was equipped with 30 inch tundra tires.

Factual narrative

On October 5, 1993, at 1715 Alaska daylight time, a wheel equipped Piper PA-18 airplane, N5285J, owned and operated by the commercial rated pilot-in-command, crashed during a landing attempt at a remote landing site located approximately 4 miles north of Haines, Alaska. The pilot, the sole occupant, was not injured and the airplane sustained substantial damage. The personal flight, operating under 14 CFR Part 91, last departed Haines, Alaska, at 1700 and the destination was the remote landing site. Visual meteorological conditions prevailed and a VFR flight plan was not filed.

The pilot told the investigator-in-charge, during a telephone conversation, that he was surveying the area looking for mountain goats. During the landing attempt on the saddle back of the mountain, he flared too high and the airplane "dropped" onto the ground from a height estimated to be three to five feet. The airplane did not bounce. Both main landing gear structural assemblies collapsed. The airplane was equipped with 30 inch tundra tires. The pilot reported that his post accident inspection of the landing gear found a fracture in the welded section of the right oleo strut tubing. An inspection of the fuselage by the NTSB investigator-in-charge found a fracture in a longeron tube (a major structural member) in the area where the left forward landing gear ear attaches to the fuselage.

Aircraft

Registration
N5285J
Reported as
Piper PA-18
Category
Airplane
Serial number
18-7143
Airframe hours
694
Engine
Lycoming O-360, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Campbell, George R.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 22, 1993 · 41 hours before

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
26
Certificate
Commercial
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,350 total · 150 in this make and model · 1,120 as pilot in command · 140 in the last 90 days · 65 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
330° at 3 knots
Visibility
75 statute miles
Lowest ceiling
None
Temperature
37 °F

FAA reports on this event · 1

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

Other investigations on N5285J · 1

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