ANC21LA093

NTSB accident investigation · Piper PA-22-150 · Chandalar Shelf, AK · September 17, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 17, 2021, 15:30 local (23:30 UTC)
Place
Chandalar Shelf, AK · 5CD
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N8061DPiper PA-22-150
Defining event
Takeoff: Flight control sys malf/fail
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20210917016119A
Case key
103925

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

A separation of the rudder cable from the rudder pedal due to the connecting bolt detaching for undetermined reasons, which resulted in a loss of directional control.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Misc hardware: fastenersAircraft › Fluids/misc hardware · Unknown/Not determinedPiper PA-22-150: 1 caseAll aircraft: 58 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that during the takeoff roll, as the airplane became airborne, he heard an “audible pop” and immediately felt slack in the left rudder pedal. The airplane banked to the right, unable to recover from the right turn, he decreased power and added right rudder. Subsequently, he continued in the forced bank to the right and maneuvered the airplane for an emergency off-airport landing. During the emergency landing the tail was dragged sideways, the main landing gear collapsed, and the airplane sustained substantial damage to the elevator. A postaccident examination revealed that the forward attachment point of the rudder cable that connects to the rudder pedal came unfastened. The pilot reported that the connecting bolt was recovered but that the nut and cotter pin were not located. Based on the available evidence it was undetermined why the nut disconnected from the bolt.

Aircraft

Registration
N8061D
Reported as
Piper PA-22-150
Category
Airplane
Serial number
22-5584
Built
1957
Airframe hours
4,480.7
Engine
Lycoming O-320 SERIES, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 18, 2021
Airport
5CD · Chandalar Shelf, runway 19, 2,529 × 70 ft, gravel
Equipment
None

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
30
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
February 28, 2020
Seat
Left
Flight hours
578 total · 578 in this make and model · 578 as pilot in command · 193 in the last 90 days · 80 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 9 knots
Visibility
10 statute miles
Lowest ceiling
800 ft broken
Temperature
34 °F, dew point 30 °F
Altimeter
29.51 inHg
Observed at
PAKP, 50 nm away
METAR
PAKP 172256Z AUTO 04009KT 10SM -RA BKN008 OVC037 01/M01 A2951 RMK AO2 RAB33SNE33 SLP036 P0000 T00111011 FZRANO

Docket · 2

The files NTSB released with the investigation on March 18, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 9.3 MB in all.

FAA reports on this event · 1

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