WPR10CA067

NTSB accident investigation · Piper PA-25-260 · Llano, CA · November 27, 2009

Accident · Minor injuriesData collectionFinal report
Date
November 27, 2009, 14:45 local (22:45 UTC)
Place
Llano, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9600PPiper PA-25-260
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report March 23, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20091127023199A
Case key
75103

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 inadequate compensation for the gusting crosswind conditions and failure to maintain lateral and 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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-25-260: 2 casesAll aircraft: 3,958 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Response/compensationPiper PA-25-260: 1 caseAll aircraft: 1,008 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-25-260: 5 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

The pilot reported that he was taking off in a gusting 15-knot left crosswind with a glider in tow. He said he was holding the aileron control to the left during the takeoff roll, and, as the airplane lifted off, it rolled immediately to the right. The pilot then applied full left aileron, but was unable to maintain control of the airplane and he released the tow rope. The airplane subsequently collided with terrain causing substantial damage to the right wing and empennage. The closest official weather reporting station, located 15 miles northwest of the accident site, indicated the winds were at 20 knots, gusting to 25 knots. The private airport was not equipped with official weather reporting facilities. Post-accident examination of the aircraft by FAA inspectors revealed no anomalies with the airplane's flight control systems.

Factual narrative

The pilot reported that he was taking off in a gusting 15-knot left crosswind with a glider in tow. He said he was holding the aileron control to the left during the takeoff roll, and, as the airplane lifted off, it rolled immediately to the right. The pilot then applied full left aileron, but was unable to maintain control of the airplane and he released the tow rope. The airplane subsequently collided with terrain causing substantial damage to the right wing and empennage. The closest official weather reporting station, located 15 miles northwest of the accident site, indicated the winds were at 20 knots, gusting to 25 knots. The private airport was not equipped with official weather reporting facilities. Post-accident examination of the aircraft by FAA inspectors revealed no anomalies with the airplane's flight control systems.

Aircraft

Registration
N9600P
Reported as
Piper PA-25-260
Category
Airplane
Serial number
25-7556113
Airframe hours
5,303
Engine
Lycoming O-540 SERIES, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Glider tow · Part 91
Operator
Southern California Soaring Academy
Registered owner
Gregg Ronald S
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 8, 2009 · 106 hours before
Departed
46CN · Llano, CA
Destination
46CN · Llano, CA
Airport
46CN · Crystal Airport, runway 25, 4,500 × 250 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
35
Injuries
Minor
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
November 9, 2008
Seat
Single
Flight hours
1,295 total · 71 in this make and model · 1,105 as pilot in command · 34 in the last 90 days · 10 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 20 knots, gusting 25
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 16 °F
Altimeter
29.88 inHg
Observed at
PMD, 15 nm away

Docket · 3

The files NTSB released with the investigation on December 28, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 717 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.