ANC00LA122

NTSB accident investigation · Piper PA-22 · Dillingham, AK · September 13, 2000

Accident · No injuriesLimited investigationFinal report
Date
September 13, 2000, 13:30 local (21:30 UTC)
Place
Dillingham, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8DGPiper PA-22
Weather
Visual (VMC) · Day
Status
Completed · report July 10, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Case key
50282

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

A malfunctioning main landing gear brake, which precipitated a ground-loop.

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.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,normal brake system - malfunctionCause
Loss of control - on ground/waterLanding - roll
Ground loop/swerveCause

Analysis

The private pilot was landing a tailwheel-equipped airplane on a gravel airstrip. Shortly after touchdown, the airplane began to drift to the left of centerline. The pilot said he applied brakes and corrective action, however, the left brake locked-up and the airplane subsequently ground-looped.

Factual narrative

On September 13, 2000, about 1330 Alaska daylight time, a tailwheel-equipped Piper PA-22, N8DG, sustained substantial damage while landing at a private airstrip, about 4 miles west of Dillingham, Alaska, at 59 degrees, 3 minutes north latitude, 158 degrees, 34 minutes west longitude. The airplane is owned and operated by the pilot, and was being operated as a visual flight rules (VFR) personal/pleasure flight under the provisions of Title 14, CFR Part 91, when the accident occurred. The private pilot, and the one passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight. The flight originated from the same airstrip.

During a telephone conversation with the NTSB investigator-in-charge (IIC) on September 13, 2000, the pilot reported that the airplane touched down in a three-point attitude on the eastbound gravel runway. He stated that shortly after touchdown the airplane began to drift to the left of centerline. The pilot applied brakes and corrective action, however, the airplane's left brake locked-up, and the airplane subsequently ground-looped.

The pilot reported that during the airplane's recovery, the left brake was still engaged, and the wheel assembly did not rotate.

The airplane sustained substantial damage to the right wing lift-strut, right wing, and elevator.

At 1354, Dillingham winds were from 10 degrees at 12 knots, gusting to 20 knots.

Aircraft

Registration
N8DG
Reported as
Piper PA-22
Category
Airplane
Serial number
27-7308
Engine
Lycoming O-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Manual Brito
Airworthiness certificate
Standard, Normal
Airport
Shannon'S Airstrip

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
38
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
460 total · 371 in this make and model · 70 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 12 knots, gusting 20
Visibility
25 statute miles
Lowest ceiling
14,000 ft broken
Temperature
52 °F
Altimeter
29.00 inHg
Observed at
DLG, 3 nm away