Piper PA-28-161 N91338
20 July 1987 · Milpitas, California, United States · Minor injuries
Summary
On 20 July 1987 at about 19:30 local time, a Piper PA-28-161 registered N91338, operated by Flying Country Club, Inc., was involved in an accident near Milpitas, California, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. No probable cause statement is available for this record.
The record
- Date
- at 19:30
- Classification
- Accident
- Location
- Milpitas, California, United States
- Nearest airport
- Reid Hillview (RHV)
- Coordinates
- 37.4397, -121.8697
- Aircraft
- Piper PA-28-161
- Registration
- N91338
- Category
- Airplane
- Engines
- 1
- Operator
- Flying Country Club, Inc.
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Instructional
- Phase of flight
- Not recorded
- Route
- San Jose → Concord
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- LAX87LA275
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 0 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
WHILE CLIMBING TO CRUISE PLT HEARD A LOUD KNOCKING NOISE FOLLOWED BY 'VIOLENT VIBRATIONS' & A LOSS OF POWER. PLT MADE A FRCD LNDING IN A NEWLY EXCAVATED CONSTRUCTION SITE & WENT OVER AN EMBANKMENT. INVES REVEALED DEFORMATION OF THE #4 CYLINDER VALVE COVER. #4 EXHAUST VALVE ROCKER ARM WAS FOUND TO BE BROKEN. REVIEW OF ACFT MAINTENANCE RECORDS REVEALED THAT AD 87-10-06 WHICH INCORPORATES LYCOMING SERVICE BULLETIN (SB) 477A WAS ACCOMP 78.7 HRS PRIOR TO THE ACCIDENT. THE SB REQUIRES ROCKER ARMS THAT DO NOT HAVE A WALL THICKNESS OF.075 BE REPLACED. IF THE ROCKER ARM PASSES THE THICKNESS EXAM THE ROCKER ARM OIL DRIP HOLE OUTER EDGE MUST BE 'BURRED' TO THE APPROX .030 RADIUS PRIOR TO REASSEMBLY. THE ROCKER ARM WAS MEASURED USING A ROUND ANVIL MICROMETER. THE MEASUREMENT MET THE MIN DIMENSION OF .075. AFTER THE ACCIDENT, MET LAB EXAM REVEALED FRACTURE FEATURES OF HIGH CYCLE FATIGUE & OVERSTRESS. THE ORIGIN OF THE FATIGUE WAS TRACED TO THE REWORKED OIL DRIP HOLE WHICH DID NOT MEET .030 RADIUS. THE WALL THICKNESS MEASURED .055 USING A MEASURING MICROSCOPE.
Quoted verbatim from the NTSB record.
Other Piper PA-28 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 20 Mar 1987 | Piper PA-28-140 | Miami, Florida, United States | - | Fatal | 2 |
| 4 Aug 1987 | Piper PA-28-161 | N. Andover, Massachusetts, United States | - | No injuries | - |
| 7 Nov 1987 | Piper PA-28-161 | Detroit, Michigan, United States | - | No injuries | - |
| 4 Aug 1987 | Piper PA-28 | Prospectville, Pennsylvania, United States | - | No injuries | - |
| 17 Apr 1987 | Piper PA-28-181 | Florida City, Florida, United States | American Aviation, Inc. | Fatal | 1 |
| 14 Nov 1987 | Piper PA-28-181 | Manitowoc, Wisconsin, United States | - | No injuries | - |
All 9,402 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 1 Nov 1987 | Durbin MONNETT MONI | Ramona, California, United States | Lipner, Robert M. | Serious injuries | - |
| 24 Dec 1987 | Bede BD-5 | Chula Vista, California, United States | Teufel, Armin U. | Fatal | 1 |
| 25 Oct 1987 | Stits ELKINS 85 | Camarillo, California, United States | - | Fatal | 1 |
| 21 Nov 1987 | Isgrigg ELITE | Tehachapi, California, United States | Isgrigg, John | Minor injuries | - |
| 27 Dec 1987 | Rolladen-Schneider LS-3 | Santa Ynez, California, United States | - | Serious injuries | - |
| 1 Jan 1987 | Cessna 152 | San Dimas, California, United States | King Aviation | Minor injuries | - |