CEN11LA345

NTSB accident investigation · Socata TBM-850 · Salem, OH · May 19, 2011

Accident · Serious injuriesLimited investigationFinal report
Date
May 19, 2011, 08:43 local (12:43 UTC)
Place
Salem, OH
Injuries
1 serious, 3 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N1ULSocata TBM-850
Defining event
Approach-VFR pattern final: Miscellaneous/other
Weather
Instrument (IMC) · Day
Status
Completed · report August 30, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Cleveland FSDO
FAA report
20110519008699A
Case key
79147

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 a stabilized glide path which resulted in the airplane touching down short of the runway.

Findings · 3

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: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedSocata TBM 700: 4 casesAll aircraft: 809 casesProbable cause
Action: incorrect action performancePersonnel issues › Action/decision · PilotSocata TBM 700: 1 caseAll aircraft: 1,386 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeSocata TBM 700: 2 casesAll aircraft: 594 cases

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

The pilot reported that he flew an instrument approach and was clear of clouds about 650 feet above ground level when he proceeded visually to the airport. About 1/2 mile from the runway, he thought the airplane was too high, but a few seconds later the airplane felt like it had an excessive rate of descent. His attempts to arrest the rate of descent were unsuccessful, and the left main landing gear struck the ground about 120 feet prior to the runway threshold. The recorded data downloaded from the airplane's non-volatile memory showed that the airplane's airspeed varied from about 71 - 81 knots indicated airspeed (IAS) during the 10 seconds prior to ground impact. The data also indicated that there was about a 3 - 5 knot tailwind during the final landing approach. The airplane's stall speed with the airplane in the landing configuration with landing flaps was 64 knots IAS at maximum gross weight. The pilot reported that there was no mechanical malfunction or system failure of the airplane.

Factual narrative

On May 19, 2011, at 0843 eastern daylight time, a Socata TBM-850, N1UL, sustained substantial damage when the airplane impacted the terrain about 120 feet prior to the approach end of runway 10L (3,404 feet by 50 feet, asphalt) at the Salem Airpark (38D), Salem, Ohio. The private pilot and two passengers were not injured, but a third passenger received serious injuries. The airplane was registered to Urschel Air Leasing, LLC, and operated by Urschel Laboratories, Inc., as a business flight under the provisions of the 14 Code of Federal Regulations Part 91. Instrument meteorological conditions prevailed at the time of the accident. An instrument flight rules (IFR) flight plan was filed. The flight departed the Porter County Regional Airport (VPZ), Valparaiso, Indiana, at 0722. The pilot reported that Akron Approach Control cleared the flight to fly the GPS-A instrument approach to 38D. At GEOFF, the final approach fix, the airplane was level at 3,000 feet above mean sea level (msl). The pilot lowered the landing gear and the flaps to begin the descent. The airplane broke out of the clouds about 1,800 feet msl and the pilot proceeded visually to the airport. He circled to the right in order to make a landing on runway 10. The pilot reported that the winds were a direct crosswind from 190 degrees at 10 knots. He reported that he had calculated that the landing distance would be 1,400 feet, and he intended to land near the approach end of the runway. He turned onto the final leg about 2 miles from the airport while maintaining about 85 - 90 knots indicated airspeed (IAS) on the approach with full flaps and descending about 400 feet per minute. He reported that about 1/2 mile from the runway, he thought the airplane was too high, but "a few seconds later" the airplane felt like it "literally just dropped out of the sky." He immediately applied full power and pitched the nose up to perform a go-around, but "the application of power was too late" and the left main landing gear struck the ground about 120 feet prior to the runway threshold. The airplane came to a stop about 120 feet past the runway threshold on the left side of the runway. The Garmin GPS 1000 MFD (multi-function display) flash card, which recorded the airplane's performance and waypoint data, was downloaded. The recorded data indicated that the airplane's airspeed varied from about 71 - 81 knots IAS during the 10 seconds prior to ground impact. The data also indicated that the airplane's ground speed averaged about 3 - 5 knots higher than the IAS during the final approach. The Socata TBM-850 Pilot Operating Handbook indicates that the stall speed with the airplane in the landing configuration with landing flaps was 64 knots IAS at maximum gross weight. The pilot indicated in his report to the National Transportation Safety Board that there was no mechanical malfunction or system failure of the airplane.

Aircraft

Registration
N1UL
Reported as
Socata TBM-850
Category
Airplane
Serial number
564
Airframe hours
187
Engine
Pratt & Whitney Canada PT6A-66D, 850 horsepower, turbo prop
Damage
Substantial damage
Flight
Business · Part 91
Operator
Urschel Laboratories
Registered owner
Urschel Air Leasing, LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · February 25, 2011
Departed
VPZ · Valparaiso, IN
Destination
38D · Salem, OH
Flight plan
IFR
Airport
38D · Salem Airpark, runway 10L, 3,404 × 50 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
33
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
October 31, 2010
Seat
Left
Flight hours
932 total · 76 in this make and model · 879 as pilot in command · 55 in the last 90 days · 28 in the last 30 days

Weather

Conditions
Instrument (IMC) · Day
Wind
200° at 5 knots
Visibility
2.5 statute miles
Lowest ceiling
500 ft overcast
Temperature
54 °F, dew point 52 °F
Altimeter
29.96 inHg
Observed at
YNG, 20 nm away

Docket · 5

The files NTSB released with the investigation on June 29, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.8 MB 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.