19990102000069A

Accident · Substantial damage

FAA accident report · Mooney M20K · Delano, CA · January 2, 1999

Date
January 2, 1999 · 16:40 local
Place
Delano, CA
Phase of flight
Forced Landing
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N1079G
NTSB investigation
NTSBLAX99LA065
Reported as
Mooney M20K
Reported engine
Continental TSIO360LB
Fatal injuries
0
Pilot’s flight hours
1,065 total979 in this make and model14 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(.19)On January 2, 1999, at 1640 hours pacific standard time, a Mooney 20K, N1079G, collided with terrain following a complete loss of engine power at Delano, California. The airplane sustained substantial damage after it collided with trees in an orchard during the emergency descent in fog. The private pilot and his passenger received minor injuries. The airplane departed alberta, Canada, at an unknown time and was destined for meadows field airport, bakersfield, California. Instrument meteorological conditions prevailed at the time of the accident and the pilot was not on an IFR flight plan. (.4)the pilot was on radar vectors for an ILS approach when a complete engine power loss occurred during IMC conditions. The pilot descended through the clouds and fog and collided with trees in an orchard. The pilot said he noticed the low voltage enunciator light illuminate then the oil pressure dropped to zero and the engine seized. Examination of the engine disclosed oil starvation damage and failures to the bearings and connecting rods. The oil pump drive gear was found separated from its shaft and loose in the accessory gear case. A metallurgical examination of the oil pump drive gear revealed rough machine marks located all around the fillet radius between the longitudinal shaft and web portions of the gear. (-23) on January 2, 1999 a Mooney MO-20K experienced total engine power loss while in a descent into bakersfield meadows airport (bfl)on an IFR approach. The pilot reported a low voltage light illumination followed by a simultanous power loss and propeller overspeed. The pilot saw a reading of zero oil pressure and a subsequent engine seizure. A glide was set up and a vector to Delano airport was provided by bakersfield approach control. The weather conditions in the area were 1/4 mile visibility with a 100 foot ceiling. The private pilot landed in a orchard with the wheels up and walked away with a cut above his nose. His passenger was uninjured. No flight plan was filed. The pilot reported his accident to local authorities with his cellular phone and was taken to the hospital. No fire occurred but both wings were damaged by the impact with the trees at the fuel tank location.

As the FAA filed it

(.19)ON JANUARY 2, 1999, AT 1640 HOURS PACIFIC STANDARD TIME, A MOONEY 20K, N1079G, COLLIDED WITH TERRAIN FOLLOWING A COMPLETE LOSS OF ENGINE POWER AT DELANO, CALIFORNIA. THE AIRPLANE SUSTAINED SUBSTANTIAL DAMAGE AFTER IT COLLIDED WITH TREES IN AN ORCHARD DURING THE EMERGENCY DESCENT IN FOG. THE PRIVATE PILOT AND HIS PASSENGER RECEIVED MINOR INJURIES. THE AIRPLANE DEPARTED ALBERTA, CANADA, AT AN UNKNOWN TIME AND WAS DESTINED FOR MEADOWS FIELD AIRPORT, BAKERSFIELD, CALIFORNIA. INSTRUMENT METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT AND THE PILOT WAS NOT ON AN IFR FLIGHT PLAN. (.4)THE PILOT WAS ON RADAR VECTORS FOR AN ILS APPROACH WHEN A COMPLETE ENGINE POWER LOSS OCCURRED DURING IMC CONDITIONS. THE PILOT DESCENDED THROUGH THE CLOUDS AND FOG AND COLLIDED WITH TREES IN AN ORCHARD. THE PILOT SAID HE NOTICED THE LOW VOLTAGE ENUNCIATOR LIGHT ILLUMINATE THEN THE OIL PRESSURE DROPPED TO ZERO AND THE ENGINE SEIZED. EXAMINATION OF THE ENGINE DISCLOSED OIL STARVATION DAMAGE AND FAILURES TO THE BEARINGS AND CONNECTING RODS. THE OIL PUMP DRIVE GEAR WAS FOUND SEPARATED FROM ITS SHAFT AND LOOSE IN THE ACCESSORY GEAR CASE. A METALLURGICAL EXAMINATION OF THE OIL PUMP DRIVE GEAR REVEALED ROUGH MACHINE MARKS LOCATED ALL AROUND THE FILLET RADIUS BETWEEN THE LONGITUDINAL SHAFT AND WEB PORTIONS OF THE GEAR. (-23) ON JANUARY 2, 1999 A MOONEY MO-20K EXPERIENCED TOTAL ENGINE POWER LOSS WHILE IN A DESCENT INTO BAKERSFIELD MEADOWS AIRPORT (BFL)ON AN IFR APPROACH. THE PILOT REPORTED A LOW VOLTAGE LIGHT ILLUMINATION FOLLOWED BY A SIMULTANOUS POWER LOSS AND PROPELLER OVERSPEED. THE PILOT SAW A READING OF ZERO OIL PRESSURE AND A SUBSEQUENT ENGINE SEIZURE. A GLIDE WAS SET UP AND A VECTOR TO DELANO AIRPORT WAS PROVIDED BY BAKERSFIELD APPROACH CONTROL. THE WEATHER CONDITIONS IN THE AREA WERE 1/4 MILE VISIBILITY WITH A 100 FOOT CEILING. THE PRIVATE PILOT LANDED IN A ORCHARD WITH THE WHEELS UP AND WALKED AWAY WITH A CUT ABOVE HIS NOSE. HIS PASSENGER WAS UNINJURED. NO FLIGHT PLAN WAS FILED. THE PILOT REPORTED HIS ACCIDENT TO LOCAL AUTHORITIES WITH HIS CELLULAR PHONE AND WAS TAKEN TO THE HOSPITAL. NO FIRE OCCURRED BUT BOTH WINGS WERE DAMAGED BY THE IMPACT WITH THE TREES AT THE FUEL TANK LOCATION.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.