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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

April 15, 1999 · Piper PA-18 · N7696D

Anchorage, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
April 15, 1999
Injury Outcomes
No injuries (1 uninjured)
Location
Anchorage, AK
Aircraft
Piper PA-18
Tail Number
N7696D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC99LA053

The solo private pilot was landing on runway 33 in a tailwheel equipped airplane on a paved runway. The pilot said that wind conditions at the time of the accident required that the pilot correct for a 10 knot, left crosswind from 240 degrees. The pilot stated that during the landing roll, a gust of wind pushed the airplane to the right, and he overcorrected to the left. He added that the right main wheel 'grabbed' and the airplane ground looped to the left. During the ground loop, the right wing struck a runway light, and sustained substantial damage. The pilot noted that there were no preaccident mechanical anomalies with the airplane. The closest weather observation station is Merrill Field. On April 15, at 0853, an Aviation Routine Weather Report (METAR) was reporting in part: Sky conditions and ceiling, 6,500 scattered; visibility, 10 statute miles; wind, 320 degrees (true) at 5 knots.

NTSB Probable Cause

The pilot's inadequate compensation for crosswind conditions. Factors associated with the accident were a crosswind, and an inadvertent ground loop.

Full Narrative

On April 15, 1999, about 0915 Alaska daylight time, a tundra tire, tailwheel equipped Piper PA-18 airplane, N7696D, received substantial damage while landing at the Merrill Field Airport, Anchorage, Alaska. The solo private pilot was not injured. The airplane was being operated as a visual flight rules (VFR) local area flight under Title 14, CFR Part 91, when the accident occurred. Visual meteorological conditions prevailed, and no flight plan was filed. During a telephone conversation with the National Transportation Safety Board investigator-in-charge, on March 28, the pilot reported that he was landing on runway 33, which required a correction for a 10 knot, left crosswind from 240 degrees. The pilot stated that during the landing roll, a gust of wind pushed the airplane to the right, and he overcorrected to the left. He added that the right main wheel "grabbed", and the airplane ground looped to the left. During the ground loop, the right wing struck a runway light, and sustained substantial damage. The closest weather observation station is Merrill Field. On April 15, at 0853, an Aviation Routine Weather Report (METAR) was reporting in part: Sky conditions and ceiling, 6,500 scattered; visibility, 10 statute miles; wind, 320 degrees (true) at 5 knots. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Flight

Event TypeAccident
Event Time09:15 AKDT
Nearest AirportMerrill Field (0nm)
Runway33
Runway Length2640 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftPiper PA-18
Tail NumberN7696D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-A2B · Reciprocating · 150
Seats2

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 61 · Third Class

Conditions

ConditionsVMC
LightNr
Wind320° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point36 C / 30 C
Altimeter29.00 inHg
Observation Time11:53
Weather SourceWFAC

Appendix: Source Data