19990821013259A

Accident · Substantial damage

FAA accident report · Bbavia 7ECA · Livermore, CA · August 21, 1999

Date
August 21, 1999 · 16:20 local
Place
Livermore, CA
Airport
Livermore Municipal Airport
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N88408
NTSB investigation
NTSBLAX99LA279
Reported as
Bbavia 7ECA

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.

Acft took off for local pattern work, lost power, and made an emergency landing off the approach end of rwy 25L. (-23)pilot reported normal takeoff and began a climb at 75 mph. At an estimated 400 to 500 feet AGL, the engine RPM dropped from 2600 to 1500 and experienced severe roughness ans vibration. Pilot pitched aircraft nose down ro achieve best glide speed at 65 mph. Since a straight landing was impractical due to obstacles pilot elected to turn 180 degrees to return to runway. At about half way through the turn, the pilots stated that the engine quit. Pilot stated that he landed hard in a nose down attitdue. During the course of the investigation (engine tear down) it was discovered that number 3 exhaust valve had failed. During aircraft records review, it was discovered that the engine had accumulated 3711.0 hours since last overhaul.

As the FAA filed it

ACFT TOOK OFF FOR LOCAL PATTERN WORK, LOST POWER, AND MADE AN EMERGENCY LANDING OFF THE APPROACH END OF RWY 25L. (-23)PILOT REPORTED NORMAL TAKEOFF AND BEGAN A CLIMB AT 75 MPH. AT AN ESTIMATED 400 TO 500 FEET AGL, THE ENGINE RPM DROPPED FROM 2600 TO 1500 AND EXPERIENCED SEVERE ROUGHNESS ANS VIBRATION. PILOT PITCHED AIRCRAFT NOSE DOWN RO ACHIEVE BEST GLIDE SPEED AT 65 MPH. SINCE A STRAIGHT LANDING WAS IMPRACTICAL DUE TO OBSTACLES PILOT ELECTED TO TURN 180 DEGREES TO RETURN TO RUNWAY. AT ABOUT HALF WAY THROUGH THE TURN, THE PILOTS STATED THAT THE ENGINE QUIT. PILOT STATED THAT HE LANDED HARD IN A NOSE DOWN ATTITDUE. DURING THE COURSE OF THE INVESTIGATION (ENGINE TEAR DOWN) IT WAS DISCOVERED THAT NUMBER 3 EXHAUST VALVE HAD FAILED. DURING AIRCRAFT RECORDS REVIEW, IT WAS DISCOVERED THAT THE ENGINE HAD ACCUMULATED 3711.0 HOURS SINCE LAST OVERHAUL.

NTSB investigation

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

Other reports on N88408 · 3

Matched to the same aircraft by N-number and date.