20080302012079A

Accident · Substantial damage

FAA accident report · Beech B36TC · Mammoth Lakes, CA · March 2, 2008

Date
March 2, 2008 · 16:20 local
Place
Mammoth Lakes, CA
Airport
Mammoth Yosemite
Phase of flight
Forced/Precautionary Landing
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N234MT
NTSB investigation
NTSBSEA08LA084
Reported as
Beech B36TC
Reported engine
Continental TSIO520UB
People aboard
1
Fatal injuries
0
Pilot’s flight hours
884 total724 in this make and model37 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.

(-23) A normal preflight was performed; however, the pilot reported the start "took a little longer than normal." The pilot stated that during run-up everything checked out normal. A full power takeoff was initiated at 35 gallons of fuel per hour with all instruments in the green. The gear was retracted and a cruise climb was initiated at 120 knots, 34 inches of manifold pressure and 1600 RPM on the propeller. Approximately 2 to 3 minutes into the flight, at approximately 1500 feet above ground level, the pilot reported "a major loss in power." A return to mmh was initiated and emergency procedures for "engine failure in flight" were performed. Engine power could not be restored and the pilot realized an emergency landing was imminent. The landing gear was lowered and the aircraft impacted the ground in a snow covered meadow approximately 2 miles from mmh. The impact severely damaged the main landing gear and wing structure. The aircraft came to rest about 50 feet from the impact point in the direction of travel. Investigation revealed approximately 70 gallons of fuel was available in the aircraft.

As the FAA filed it

(-23) A NORMAL PREFLIGHT WAS PERFORMED; HOWEVER, THE PILOT REPORTED THE START "TOOK A LITTLE LONGER THAN NORMAL." THE PILOT STATED THAT DURING RUN-UP EVERYTHING CHECKED OUT NORMAL. A FULL POWER TAKEOFF WAS INITIATED AT 35 GALLONS OF FUEL PER HOUR WITH ALL INSTRUMENTS IN THE GREEN. THE GEAR WAS RETRACTED AND A CRUISE CLIMB WAS INITIATED AT 120 KNOTS, 34 INCHES OF MANIFOLD PRESSURE AND 1600 RPM ON THE PROPELLER. APPROXIMATELY 2 TO 3 MINUTES INTO THE FLIGHT, AT APPROXIMATELY 1500 FEET ABOVE GROUND LEVEL, THE PILOT REPORTED "A MAJOR LOSS IN POWER." A RETURN TO MMH WAS INITIATED AND EMERGENCY PROCEDURES FOR "ENGINE FAILURE IN FLIGHT" WERE PERFORMED. ENGINE POWER COULD NOT BE RESTORED AND THE PILOT REALIZED AN EMERGENCY LANDING WAS IMMINENT. THE LANDING GEAR WAS LOWERED AND THE AIRCRAFT IMPACTED THE GROUND IN A SNOW COVERED MEADOW APPROXIMATELY 2 MILES FROM MMH. THE IMPACT SEVERELY DAMAGED THE MAIN LANDING GEAR AND WING STRUCTURE. THE AIRCRAFT CAME TO REST ABOUT 50 FEET FROM THE IMPACT POINT IN THE DIRECTION OF TRAVEL. INVESTIGATION REVEALED APPROXIMATELY 70 GALLONS OF FUEL WAS AVAILABLE IN THE AIRCRAFT.

NTSB investigation

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