ERA09CA364

NTSB accident investigation · Piper L-21B · Big Beaver, PA · June 22, 2009

Accident · No injuriesData collectionFinal report
Date
June 22, 2009, 15:30 local (19:30 UTC)
Place
Big Beaver, PA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N10365Piper L-21B
Defining event
Landing-landing roll: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed · report September 10, 2009
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20090622012759A
Case key
74110

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

The pilot's failure to maintain directional control during a landing rollout with a crosswind.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper L-21B: 4 casesAll aircraft: 3,958 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper L-21B: 1 caseAll aircraft: 1,008 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper L-21B: 4 casesAll aircraft: 9,295 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

According to the pilot of the tailwheel-equipped airplane, he landed on Runway 28. During the rollout, the airplane became "erratic for no apparent reason," veered off the left side of the runway, encountered standing water in the grass and nosed over, damaging the vertical stabilizer. Runway 28 was 4,501 feet long and 100 feet wide. Winds, recorded at the airport 17 minutes after the accident, were from 360 degrees true at 12 knots. A postflight examination of the airplane revealed no preexisting mechanical anomalies.

Factual narrative

According to the pilot of the tailwheel-equipped airplane, he landed on runway 28. During the rollout, the airplane became "erratic for no apparent reason," veered off the left side of the runway, encountered standing water in the grass and nosed over, damaging the vertical stabilizer. Runway 28 was 4,501-feet-long and 100-feet-wide. Winds, recorded at the airport 17 minutes after the accident, were from 360 degrees true at 12 knots. A postflight examination of the airplane revealed no preexisiting mechanical anomalies.

Aircraft

Registration
N10365
Reported as
Piper L-21B
Category
Airplane
Serial number
54-2533
Airframe hours
2,930
Engine
Lycoming O-290 SERIES, 140 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Air Heritage Inc
Registered owner
Air Heritage Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 8, 2009
Departed
JST · Johnstown, PA
Destination
BVI · Beaver Falls, PA
Airport
BVI · Beaver County Airport, runway 28, 4,501 × 100 ft, asphalt

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
70
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2
Last flight review
July 28, 2007
Seat
Front
Flight hours
3,528 total · 32 in this make and model · 3,206 as pilot in command · 40 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 12 knots
Visibility
15 statute miles
Lowest ceiling
2,000 ft broken
Temperature
84 °F, dew point 66 °F
Altimeter
29.85 inHg
Observed at
BVI

Docket · 2

The files NTSB released with the investigation on July 30, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 490 KB 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 N10365 · 1

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