ANC21LA034

NTSB accident investigation · Cessna 140 · Palmer, AK · April 25, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 24, 2021, 20:00 local (Apr 25, 2021, 04:00 UTC)
Place
Palmer, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1685VCessna 140
Defining event
Landing-landing roll: Nose over/nose down
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
FAA report
20210424006659A
Case key
103006

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 selection of unsuitable terrain for landing and his excessive braking which resulted in a nose-over.

Findings · 4

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.

Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 140: 8 casesAll aircraft: 1,269 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 140: 56 casesAll aircraft: 9,295 casesProbable cause
Aircraft capability: braking capabilityAircraft › Aircraft oper/perf/capability · Incorrect use/operationCessna 140: 2 casesAll aircraft: 57 casesProbable cause
Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Effect on operationCessna 140: 4 casesAll aircraft: 264 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 of the tailwheel-equipped airplane reported that, he was landing on a remote unimproved gravel airstrip that was a “little soft.” After touchdown and during the landing rollout the airplane slowed rapidly, the tail began to rise and the airplane nosed-over sustaining substantial damage to fuselage, left lift strut, vertical stabilizer and rudder. The pilot reported that there were no preaccident mechanical malfunctions or anomalies with the airplane that would have precluded normal operation and that the accident may have been prevented if he had selected a more suitable landing site or applied less brakes after touchdown.

Aircraft

Registration
N1685V
Reported as
Cessna 140
Category
Airplane
Serial number
13857
Built
1947
Airframe hours
3,744.3
Engine
Cont Motor C90 SERIES, 90 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 28, 2021
Destination
PAMR · Anchorage, AK

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
21
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 23, 2020
Seat
Left
Restraint
4-point
Flight hours
1,344 total · 124 in this make and model · 681 as pilot in command · 144 in the last 90 days · 40 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 6 knots
Visibility
10 statute miles
Temperature
57 °F, dew point 27 °F
Altimeter
29.93 inHg
Observed at
PAAQ, 10 nm away
METAR
PAAQ 250353Z AUTO 25006KT 10SM CLR 14/M03 A2993 RMK AO2 SLP139 T01441033 TSNO

Docket · 2

The files NTSB released with the investigation on September 20, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.6 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.

Other investigations on N1685V · 1

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