ASN Wikibase Occurrence # 297336
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| Date: | Saturday 4 May 2002 |
| Time: | 13:00 LT |
| Type: |  Boeing-Stearman A75SN1 |
| Owner/operator: | Private |
| Registration: | N5805V |
| MSN: | 75-2351 |
| Total airframe hrs: | 1152 hours |
| Engine model: | Continental W670-6N |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Georgetown, Texas -
 United States of America
|
| Phase: | Unknown |
| Nature: | Demo/Airshow/Display |
| Departure airport: | Georgetown Municipal Airport, TX (KGTU) |
| Burnet Municipal Kate Craddock Field, TX (KBMQ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane encountered wake turbulence during the takeoff/initial climb of the formation flight of 4 airplanes at an air show. The 2 lead airplanes had engines rated at 450 horsepower. The accident airplane engine was rated at 220 horsepower. According to the pilot, following the wake turbulence, the airplane had "reduced" power and did not maintain altitude. The airplane descended, struck power lines, trees, and a residence before coming to rest nose low on the ground. Examination revealed that compression on two of the engine cylinders was below recommended specifications, and one magneto was timed approximately 2 1/2 degrees retarded. According to the FAA inspector, the propeller diameter was longer than the maximum allowable per the Type Certification Data Sheet (TCDS), and the reported take-off and climb rpm of 1700-1800 was lower than the TCDS specification of 2,075 rpm at 220 horsepower. According to the propeller manufacturer's representative, there were "no indications of any type of propeller failure prior to impact."
Probable Cause: The pilot's inadequate planning/decision resulting in the wake turbulence encounter during the takeoff/initial climb of the formation flight. A contributing factor was the partial loss of engine power for an undetermined reason.
Accident investigation:
 |
|
Sources:
NTSB FTW02LA139
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 17:21 | ASN Update Bot | Added |
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