WPR10CA157

NTSB accident investigation · Piper PA-28-161 · El Cajon, CA · March 13, 2010

Accident · No injuriesData collectionFinal report
Date
March 13, 2010, 14:30 local (22:30 UTC)
Place
El Cajon, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N8441BPiper PA-28-161
Defining event
Approach-VFR pattern downwind: Birdstrike
Weather
Visual (VMC) · Day
Status
Completed · report July 1, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
Case key
75487

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

An in-flight collision with a bird in the downwind leg of the airport's traffic pattern.

Findings · 1

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.

Object/animal/substance: animal(s)/bird(s)Environmental issues › Physical environment · Effect on equipmentPiper PA-28-161: 9 casesAll aircraft: 358 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.

BirdstrikeApproach-VFR pattern downwindPiper PA-28-161: 6 casesAll aircraft: 253 casesDefining event

Analysis

The certified flight instructor (CFI) and student performed a series of takeoffs and landings at the airport. The airplane's anti-collision light was operating. Clouds were located about 2,800 feet above ground level and the visibility was 25 miles. There was light turbulence in the area. While in the downwind leg for their fourth landing, the air traffic controller requested that the pilot fly an extended downwind leg. The CFI stated that "shortly thereafter, we noticed a red-tail hawk slightly ahead and at our same altitude. Upon sighting the bird, I immediately took control from my student and initiated a climbing turn to the left. A few seconds later we heard a loud impact on our right wing tip. I immediately looked out the window and noticed the wing had extensive damage." The CFI reported that she immediately landed, and during the approach she did not detect any noticeable effect on the airplane's performance. A 3-foot-long by 8-inch-deep area of the right wing's leading edge was crushed aft, and the internal wing structure was bent. No residue from the bird was found.

Factual narrative

The certified flight instructor (CFI) reported that she and her student planned to perform a series of takeoffs and landings at the airport. Their first takeoff occurred about 1410, and the CFI requested and received an air traffic clearance to remain in the pattern. The airplane's anti-collision light was operating. The lowest layer of clouds was located about 2,800 feet above ground level, and the visibility was 25 miles. There was light turbulence in the area. About 1430, after making three touch-and-go landings, the air traffic controller requested that the pilot fly an extended downwind leg. The CFI stated that "shortly thereafter, we noticed a red-tail hawk slightly ahead and at our same altitude. Upon sighting the bird, I immediately took control from my student and initiated a climbing turn to the left. A few seconds later we heard a loud impact on our right wing tip. I immediately looked out the window and noticed the wing had extensive damage." The CFI reported that she immediately landed, and during the approach she did not detect any noticeable effect on the airplane's performance. Regarding the extent of the damage, the flight school's director of maintenance reported that the outboard span of leading edge wing skin, immediately inboard of the wing tip, was crushed about 8 inches in an aft direction. In this area, an outer wing rib was cracked, and two ribs were bent. The span of the deformation was almost 3 feet, and a major structural airframe repair was required to fix the damaged wing. No residue of the impacted bird was found. Several photographs (included in the docket for this report) were provided to the National Transportation Safety Board by the airplane rental company, Golden State Flying Club, El Cajon, California.

Aircraft

Registration
N8441B
Reported as
Piper PA-28-161
Category
Airplane
Serial number
28-8216005
Airframe hours
2,360
Engine
Lycoming O-320-D3, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Golden State Flying Club
Registered owner
Volar Corp
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · February 19, 2010 · 41 hours before
Departed
SEE · El Cajon, CA
Destination
SEE · El Cajon, CA
Airport
SEE · Gillespie Field, runway 27L, 2,738 × 60 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
30
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
November 25, 2008
Seat
Right
Flight hours
1,535 total · 542 in this make and model · 1,430 as pilot in command · 110 in the last 90 days · 30 in the last 30 days · 2 in the last 24 hours
Role
Student pilot
Age
32
Injuries
None
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
75 total · 75 in this make and model · 3 as pilot in command · 12 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 5 knots
Visibility
25 statute miles
Lowest ceiling
4,200 ft broken
Temperature
59 °F, dew point 48 °F
Altimeter
30.04 inHg
Observed at
SEE

Docket · 3

The files NTSB released with the investigation on April 12, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 611 KB in all.

Other investigations on N8441B · 1

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