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19990312023939A

Accident · Substantial damage
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FAA accident report · Mtsbsi MU-2B-20 · Knoxville, TN · March 12, 1999

FAA Aviation Safety Information Portal

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Date
March 12, 1999 · 18:00 local
Place
Knoxville, TN
Airport
Mc Ghee Tyson
Phase of flight
Level Off Touchdown
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N176BJ
NTSB investigation
NTSBATL99LA054
Reported as
Mtsbsi MU2B20
Reported engine
Garrett TPE3311
People aboard
3
Fatal injuries
0
Pilot’s flight hours
3,811 total104 in this make and model10 in the last 90 days
N176BJRegistration cancelled Mar 1, 2007 · Mitsubishi MU-2B-20S/N 144 · Built 1969Airframe modelMitsubishi MU-2B-20Engine modelAiResearch TPE331 seriesTurbo-prop

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.

(.4) About 30 minutes into the flight, the right engine lost power. The pilot attempted to restart the engine, but was unsuccessful. The pilot secured the right engine and feathered the right propeller. Shortly after attempting to restart the right engine, the pilot said he also experienced a complete loss of electrical power, and was unable to use his radios. The pilot said he placed the landing gear lever in the down position, and established an approach to runway 5R for an emergency landing. The airplane touched down and skidded off the left side of the runway. Examination of the airplane and the engine assemblies failed to disclose a mechanical malfunction or component failure. During the extensive airplane examination the electrical system was also functionally checked; the examination failed to disclose any mechanical problems. When the master switch was placed in the on position 75% of the battery power was restored to the airplane. The electrical power source was sufficient to activate the landing gear doors. During the examination of the fuel system, fuel was traces from the fuel tank to the fuel control unit. There was no mechanical problems discovered with the righ t fuel shut-off valve; the right fuel shut-off valve functioned normally. (-23)ALT99LA054

As the FAA filed it

(.4) ABOUT 30 MINUTES INTO THE FLIGHT, THE RIGHT ENGINE LOST POWER. THE PILOT ATTEMPTED TO RESTART THE ENGINE, BUT WAS UNSUCCESSFUL. THE PILOT SECURED THE RIGHT ENGINE AND FEATHERED THE RIGHT PROPELLER. SHORTLY AFTER ATTEMPTING TO RESTART THE RIGHT ENGINE, THE PILOT SAID HE ALSO EXPERIENCED A COMPLETE LOSS OF ELECTRICAL POWER, AND WAS UNABLE TO USE HIS RADIOS. THE PILOT SAID HE PLACED THE LANDING GEAR LEVER IN THE DOWN POSITION, AND ESTABLISHED AN APPROACH TO RUNWAY 5R FOR AN EMERGENCY LANDING. THE AIRPLANE TOUCHED DOWN AND SKIDDED OFF THE LEFT SIDE OF THE RUNWAY. EXAMINATION OF THE AIRPLANE AND THE ENGINE ASSEMBLIES FAILED TO DISCLOSE A MECHANICAL MALFUNCTION OR COMPONENT FAILURE. DURING THE EXTENSIVE AIRPLANE EXAMINATION THE ELECTRICAL SYSTEM WAS ALSO FUNCTIONALLY CHECKED; THE EXAMINATION FAILED TO DISCLOSE ANY MECHANICAL PROBLEMS. WHEN THE MASTER SWITCH WAS PLACED IN THE ON POSITION 75% OF THE BATTERY POWER WAS RESTORED TO THE AIRPLANE. THE ELECTRICAL POWER SOURCE WAS SUFFICIENT TO ACTIVATE THE LANDING GEAR DOORS. DURING THE EXAMINATION OF THE FUEL SYSTEM, FUEL WAS TRACES FROM THE FUEL TANK TO THE FUEL CONTROL UNIT. THERE WAS NO MECHANICAL PROBLEMS DISCOVERED WITH THE RIGH T FUEL SHUT-OFF VALVE; THE RIGHT FUEL SHUT-OFF VALVE FUNCTIONED NORMALLY. (-23)ALT99LA054

NTSB investigation

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

NTSB ATL99LA054Accident · No injuriesLimited investigationFinal reportKnoxville, TNA loss of engine power for undetermined reasons. Contributing to the accident was the failure of the landing gear to extend for undetermined reasons.Mar 12, 1999 · Substantial damage