WPR10LA082

NTSB accident investigation · EADS Socata TBM 700 · Truckee, CA · December 14, 2009

Accident · Minor injuriesLimited investigationFinal report
Date
December 13, 2009, 17:38 local (Dec 14, 2009, 01:38 UTC)
Place
Truckee, CA
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N850MTEADS Socata TBM 700
Defining event
Approach-VFR go-around: Collision with terr/obj (non-CFIT)
Weather
Instrument (IMC) · Dusk
Status
Completed · report March 16, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20091213022449A
Case key
75166

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 pilot’s failure to maintain an adequate airspeed and clearance from terrain during an attempted go-around. Contributing to the accident was the pilot's decision to land on a partially obscured runway.

Findings · 5

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleEADS Socata TBM 700: 1 caseAll aircraft: 1,310 casesProbable cause
Terrain: mountainous/hilly terrainEnvironmental issues › Physical environment · Response/compensationEADS Socata TBM 700: 1 caseAll aircraft: 329 cases
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedEADS Socata TBM 700: 1 caseAll aircraft: 1,681 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

During the flight, the instrument-rated private pilot was monitoring the weather at his intended destination. He noted the weather and runway conditions and decided to conduct a global-positioning-system instrument approach to a known closed runway with the intention of circling to a different runway. As the airplane neared the missed approach point, the pilot established visual contact with the airport's runway environment and canceled his instrument flight rules clearance. As he entered the left downwind leg of the traffic pattern for his intended runway, the pilot noticed that the first part of the runway was covered in fog and that the visibility was 0.75 of a mile with light snow. With at least 5,000 feet of clear runway, he opted to land just beyond the fog. Prior to touchdown, the pilot concluded that there was not enough runway length left to make a landing and performed a go-around by applying power, pitching up, and retracting the landing gear. During the go-around, the pilot focused outside the airplane cockpit but had no horizon reference in the dark night conditions. He heard the stall warning and realized that the aircraft was not climbing. The pilot pitched the nose down and observed only snow and trees ahead. Not being able to climb over the trees, the airplane subsequently impacted trees and terrain, coming to rest upright in a wooded, snow-covered field. The pilot stated that there were no anomalies with the engine or airframe that would have precluded normal operation of the airplane.

Factual narrative

On December 13, 2009, about 1738 Pacific standard time, an EADS Socata TBM-700 airplane, N850MT, was substantially damaged when it impacted terrain following an aborted landing near the Truckee-Tahoe Airport (TRK), Truckee, California. The airplane was registered to Tahoe Investments, Los Altos Hills, California, and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91. The instrument-rated private pilot and his passenger received minor injuries. Instrument meteorological conditions prevailed and an instrument flight rules (IFR) flight plan was filed for the personal flight. The cross-country flight originated from the San Carlos Airport (SQL), San Carlos, California, at 1630, with an intended destination of TRK. In a written statement, the pilot reported that prior to the flight he obtained a weather briefing for the intended route of flight and destination. He also continuously checked the TRK weather prior to departure. He recalled that prior to departure the TRK weather indicated visibility greater than 7 miles, overcast clouds at 2,000 feet, wind calm, and that runway 19 was closed. During the flight, he monitored the weather conditions at TRK and decided to conduct the Global Positioning System (GPS) Runway 19 instrument approach with the intention of circling to a different runway. The pilot reported that the passenger saw the airport as they passed over it, but he could not see it and continued IFR flight. As the pilot initiated the instrument approach, he continued to monitor the weather conditions at the airport and noted that the visibility had decreased to 7 miles. The pilot stated that during the approach he activated all of the airplane’s deicing equipment, as the airplane had “picked up some light rime ice.” The pilot was unsure at what altitude the airplane broke out of the clouds because the ground was visible throughout the approach. As the airplane approached the published missed approach point (MAP), the pilot established visual contact with the runway lighting for runway 28 and subsequently canceled his IFR clearance. As the pilot entered a left downwind for runway 28, he noticed “the first part of [runway] 28 was covered in fog.” The pilot checked the reported weather conditions via the Automated Surface Observing System (ASOS) located at TRK and noted that the visibility was three-quarters of a mile with light snow. The pilot reported that there was at least 5,000 feet of clear runway and he decided to make a mid-field landing, just beyond the fog. Prior to touchdown the pilot decided that there was not enough runway to land, as the airplane was “too high and fast.” The pilot initiated a go-around by applying power, pitching up, and retracting the landing gear. During the go-around the pilot reported that he “was totally focused outside the plane because of the clouds and mountains, but had no horizon reference in the dark.” He also stated that he heard an audible warning horn, whichhe thought was activated because he had failed to raise the landing flaps before retracting the gear. As the audible horn warning continued, the pilot observed that the airplane was not climbing; he then realized that the sound was the stall warning horn. The pilot stated that when he pitched the nose down, he immediately saw only snow and trees ahead. Not being able to climb over the trees, the airplane subsequently impacted trees and terrain about 0.5 miles northwest from the departure end of runway 28. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the airplane came to rest upright within a wooded snow covered field. The left and right wings were structurally damaged. The propeller assembly was separated from the engine and located adjacent to the main wreckage. A strong odor of jet fuel was also present at the accident site. The pilot reported that there were no pre-existing mechanical problems with the engine or airframe.

Aircraft

Registration
N850MT
Reported as
EADS Socata TBM 700
Category
Airplane
Serial number
489
Airframe hours
196
Engine
Pratt & Whitney PT6A-66D, 850 horsepower, turbo prop
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Tahoe Investments Inc
Registered owner
Tahoe Investments Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 11, 2009 · 4 hours before
Departed
SQL · San Carlos, CA
Destination
TRK · Truckee, CA
Flight plan
IFR
Airport
TRK · Truckee-Tahoe Airport, runway 28, 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
61
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
November 4, 2009
Seat
Left
Flight hours
1,738 total · 1,098 in this make and model · 1,547 as pilot in command · 41 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Dusk
Wind
90° at 4 knots
Visibility
1 statute miles
Lowest ceiling
1,500 ft broken
Temperature
28 °F, dew point 27 °F
Altimeter
29.92 inHg
Observed at
TRK, 1 nm away

Docket · 3

The files NTSB released with the investigation on October 29, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 501 KB in all.

FAA reports on this event · 1

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