Individually Owned: 150,657
Corporate Owned: 137,281
Hayward Air Term. Airport
Aircraft Accident/Incident Report
Hayward, California 94541
Wednesday, April 27, 1988 PDT
NTSB Narrative Summary Released at Completion of Accident
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. THE AIRCRAFT COLLIDED WITH A MOTOR VEHICLE ON TOUCHDOWN AND SLID TO A STOP. POST CRASH EXAM REVEALED THE RPM CONTROL LEVERS AND BELLRANKS TO BE IN THE HIGH RPM SETTINGS. THE LEFT PROP WAS FOUND IN THE FEATHERED POSITION.
NTSB Probable Cause Narrative
PILOT'S FAILURE TO DETECT AN UNCOMMANDED PROPELLER FEATHERING PROCEDURES ESTABLISHED IN THE PILOT'S OPERATING HANDBOOK.
Event Information
| Type of Event | Accident |
| Event Date | 4/27/1988 |
| Event Day of the Week | Wednesday |
| Time of Event | 14 |
| Event Time Zone | Pacific Daylight Time |
| Event City | HAYWARD |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94541 |
| Event Date Year | 1988 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | HAYWARD AIR TERM. |
| Event Location Nearest Airport ID | HWD |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 47 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2345 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 289 |
| Weather Observation Facility ID | OAK |
| Elevation of weather observation facility | 6 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 20000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 14 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 0 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2362 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 27 1988 12:00AM |
| NTSB Notification Time | 100 |
| Fiche Number and/or location -used to find docket information | 39076 |
| Date of most recent change to record | Feb 21 2002 3:05PM |
| User who most recently changed record | NTSB\GIUV |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N3588Y |
| NTSB Number | LAX88FA169 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | VFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | PIPER |
| Aircraft Model | PA-31-350 |
| Aircraft Series Identifier | PA-31-350 |
| Aircraft Serial Number | 318052129 |
| Certified Max Gross Weight | 7000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 2 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 22 1988 12:00AM |
| Airframe hours since last inspection | 3 |
| Airframe Hours | 3355 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | HELICOPTERS UNLIMITED INC |
| Aircraft Owner Street Address | P.O. BOX 4415 |
| Aircraft Owner City | OAKLAND |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 94614 |
| Operator is an individual? | -- |
| Operator Name | HELICOPTERS UNLIMITED |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | P.O. BOX 4115 AIRPORT STATION |
| Operator City | OAKLAND |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 94614 |
| Operator Code | |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | CCB |
| Departure City | UPLAND |
| Departure State | CA |
| Departure Country | |
| Departure Time | 2235 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | HWD |
| Destination City | HAYWARD |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 28 |
| Runway Length | 5024 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |