LAX97LA078

NTSB accident investigation · Cessna TU206G · Mammoth Lakes, CA · December 8, 1996

Accident · No injuriesLimited investigationFinal report
Date
December 8, 1996, 09:00 local (17:00 UTC)
Place
Mammoth Lakes, CA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N756UPCessna TU206G
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1998
Report
Approved by Office Director
FAA report
19961208042469A
Case key
29708

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The loss of power for undetermined reasons, and the pilot's inappropriate use of flaps and his failure to maintain an adequate airspeed during the subsequent landing attempt.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerApproach - vfr pattern - final approach
Reason for occurrence undeterminedCause
Forced landingEmergency descent/landing
Hard landingLanding - flare/touchdown
Lowering of flaps - improperPilot in commandCause
Airspeed(vso) - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in command

Analysis

The pilot reported that about 40 miles south of the airport the fuel pressure dropped and he turned on the auxiliary fuel pump and continued the descent for landing. On final approach the aircraft was low and he added throttle, with no response. The pilot noted that the stall warning was sounding and he lowered the nose slightly to prevent a stall. The aircraft landed hard on the runway threshold and collapsed the nose gear. The pilot told responding police officers that at 100 feet agl on final the engine lost power and a high rate of descent developed. He further told the responding officers that he 'put on full flaps to slow his free fall,' and when that did not work, he lowered the nose to regain speed. The aircraft collided with the runway on the nose gear, collapsing it, and damaging the propeller. The Safety Board was notified of the accident 2 weeks after the occurrence, and after the aircraft had been moved and disassembled. The total fuel quantity and the distribution among the tanks was not ascertained. The Safety Board located the aircraft at the salvage facility who transported it from the accident site. The engine was started and successfully test run using the airframe systems.

Factual narrative

On December 8, 1996, at 0900 hours Pacific standard time, a Cessna TU206G, N756UP, collapsed the nose landing gear during a hard landing on runway 09 at the Mammoth Lakes, California, airport following a loss of engine power on final approach. The aircraft was owned and operated by the pilot. Visual meteorological conditions prevailed at the time and no flight plan was filed for the operation. The aircraft incurred substantial damage. The certificated private pilot and the two passengers on board were not injured. The flight originated at Fullerton, California, on the day of the accident about 0720 as a personal cross-country flight to Mammoth.

In his written statement, the pilot reported that about 40 miles south of the airport the fuel pressure dropped and he turned on the auxiliary fuel pump and continued the descent for landing. On final approach the aircraft was low and he added throttle, with no response. The pilot noted that the stall warning was sounding and he lowered the nose slightly to prevent a stall. The aircraft landed hard on the runway threshold and collapsed the nose gear.

Mammoth Lakes Police officers responded to the scene and interviewed the pilot. According to their report, the pilot stated that at 100 feet agl on final the engine lost power and a high rate of descent developed. He further told the responding officers that he "put on full flaps to slow his free fall," and when that did not work, he lowered the nose to regain speed. The aircraft collided with the runway on the nose gear, collapsing it and damaging the propeller.

The aircraft was recovered by National Aircraft, Long Beach, California. Following recovery, the engine was started and test run using the airframe systems.

The Safety Board was notified of the accident on December 23, 1996, after the aircraft had been moved and disassembled. The total fuel quantity and the distribution among the tanks was not ascertained.

Aircraft

Registration
N756UP
Reported as
Cessna TU206G
Category
Airplane
Serial number
U20604369
Airframe hours
2,280
Engine
Continental TSIO-520-M, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David D. Rastavan
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 30, 1996 · 36 hours before
Departed
FUL · Fullerton, CA
Destination
MMH
Airport
MMH · Mammoth Lakes, runway 9, 7,000 × 100 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,222 total · 722 in this make and model · 1,064 as pilot in command · 55 in the last 90 days · 25 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 14 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
50 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.