ASN Wikibase Occurrence # 132837
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| Date: | Wednesday 27 April 1988 |
| Time: | 00:14 |
| Type: |  Piper PA-31-350 Navajo Chieftain |
| Owner/operator: | Helicopters Unlimited Inc |
| Registration: | N3588Y |
| MSN: | 31-8052129 |
| Total airframe hrs: | 3355 hours |
| Engine model: | LYCOMING TSIO-540-J2BD |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Hayward Executive Airport, Hayward, Alameda County, California -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Cable Airport, Upland, San Bernardino County, California (CCB/KCCB) |
| Hayward Executive Airport, Hayward, California (HWD/KHWD) | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
UPON ARRIVING AT HIS DESTINATION, THE PILOT BEGAN A VISUAL, NIGHT DESCENT TO HIS DESTINATION AIRPORT. AS THE AIRCRAFT DESCENDED, THE PILOT REDUCED THE AIRSPEED, AND DEPLOYED FLAPS. AS THE AIRCRAFT NEARED THE AIRPORT, THE PILOT INCREASED THE FLAP ANGLE AND ADJUSTED THE PROPELLERS TO THE LANDING RPM, AND THE AIRSPEED DECREASED.
THE PILOT STATED THAT AT THIS TIME HE HEARD A NOISE THAT SOUNDED LIKE A FLUTTER WHICH HE THOUGHT WAS EMANATING FROM THE RIGHT ENGINE. FULL THROTTLE WAS APPLIED, BUT THE AIRSPEED CONTINUED TO DECREASE AND THE PILOT ELECTED TO LAND ON A FREEWAY NEAR THE AIRPORT. THE AIRCRAFT COLLIDED WITH A MOTOR VEHICLE ON TOUCHDOWN AND SLID TO A STOP.
POST CRASH EXAMINATION REVEALED THE RPM CONTROL LEVERS AND BELL CRANKS TO BE IN THE HIGH RPM SETTINGS. THE LEFT PROP WAS FOUND IN THE FEATHERED POSITION.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
PILOT'S FAILURE TO DETECT AN UNCOMMANDED PROPELLER FEATHERING PROCEDURES ESTABLISHED IN THE PILOT'S OPERATING HANDBOOK.
Sources:
1. NTSB Identification: LAX88FA169 at https://www.ntsb.gov/investigations/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X25490&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=3588Y
3. http://haywardairportnoise.org/hay-acc.html
4. https://www.hayward-ca.gov/CITY-GOVERNMENT/COUNCIL-STANDING-COMMITTEES/COUNCIL-AIRPORT-COMMITTEE/2013/CSC-CAC042513full.pdf
5. [LINK NOT WORKING ANYMORE:http://www.baaa-acro.com/1988/archives/crash-of-a-piper-pa-31-navajo-chieftain-in-hayward/]
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Jun-2015 12:41 | Dr. John Smith | Updated [Time, Cn, Location, Departure airport, Destination airport, Source, Narrative] |
| 18-Jun-2015 21:49 | Dr. John Smith | Updated [Nature, Source] |
| 18-Jun-2015 21:52 | Dr. John Smith | Updated [Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Oct-2017 23:18 | Dr. John Smith | Updated [Time, Operator, Departure airport, Destination airport, Source, Narrative] |
| 08-Oct-2017 23:20 | Dr. John Smith | Updated [Aircraft type] |
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