ANC99LA069

NTSB accident investigation · Piper PA-12 · Anchorage, AK · June 5, 1999

Accident · No injuriesLimited investigationFinal report
Date
June 5, 1999, 07:05 local (15:05 UTC)
Place
Anchorage, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N78456Piper PA-12
Weather
Visual (VMC) · Day
Status
Completed · report June 22, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19990605006409A
Case key
46564

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 compensate for the wind conditions and maintain a proper rate of descent during the approach for landing, which resulted in a hard landing, and the subsequent collapse of the right main landing gear strut.

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.

Hard landingLanding - aborted
Compensation for wind conditions - inadequatePilot in commandCause
Proper descent rate - not maintainedPilot in commandCause
Landing gear,main gear strut - bent
Main gear collapsedEmergency landing
Landing gear,main gear strut - collapsed
Directional control - not possible

Analysis

The pilot was attempting to land on an off airport gravel bar, with a right crosswind of 15 to 20 knots. He described the airplane developing a high rate of descent prior to landing, and increasing power to slow the descent. He said the airplane landed hard, bounced, and he aborted the landing. He then observed the right main wheel misaligned about 30 degrees. The pilot returned to the departure airport's gravel airstrip for an emergency landing. During the landing, the right main landing gear strut collapsed, damaging the right-front lift-strut.

Factual narrative

On June 5, 1999, at 0705 Alaska daylight time, a tundra tire equipped Piper PA-12 airplane, N78456, sustained substantial damage during an emergency landing at the Lake Hood Strip, Anchorage, Alaska. The airline transport pilot and sole passenger were not injured. The airplane was being operated under 14 CFR Part 91 as a Visual Flight Rules (VFR) personal flight. The flight departed Anchorage International Airport, Anchorage, at 0605, for the Alexander River, about 40 miles north of Anchorage. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed.

The pilot and passenger spoke with the NTSB investigator-in-charge (IIC) at the accident site at 0715. Both occupants stated that while attempting to land on a gravel bar, the airplane hit hard, bounced, and the pilot aborted the landing. The pilot indicated the winds were about 15 to 20 knots, from the right of the nose. The pilot said that prior to touchdown the airplane developed a high rate of descent, which he attempted to reduce by increasing power. Both occupants said they heard a loud noise during the landing, and then saw the right wheel misaligned about 30 degrees to the right. The pilot flew the airplane to Anchorage, and decided to land on the gravel strip at Lake Hood. During landing, the right main landing gear strut collapsed. The right wingtip struck the ground, damaging the wingtip and right-forward lift-strut.

Aircraft

Registration
N78456
Reported as
Piper PA-12
Category
Airplane
Serial number
12-1965
Airframe hours
2,934
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Scott E. Rozmenoski
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 15, 1999 · 14 hours before
Departed
ANC · AK
Destination
Z41
Airport
Z41 · Lake Hood Strip, runway 31, 2,200 × 70 ft, gravel

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
27
Certificates
Private, Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
5,766 total · 162 in this make and model · 4,870 as pilot in command · 184 in the last 90 days · 39 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 36 °F
Altimeter
29.00 inHg
Observed at
LHD

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 N78456 · 1

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