ATL90FA163

NTSB accident investigation · Mitsubishi MU-2B-36 · Nashville, TN · September 6, 1990

Accident · FatalField investigationFinal report
Date
September 6, 1990, 11:31 local (16:31 UTC)
Place
Nashville, TN
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N82MAMitsubishi MU-2B-36
Weather
Visual (VMC) · Day
Status
Completed · report April 13, 1992
Report
Approved by Office Director
FAA report
19900906038359A
Case key
8148

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 company/operator management's decision to operate the aircraft with a known deficiency without further maintenance, the pilot's improper planning/decision and the pilot's failure to abort the takeoff (while there was sufficient runway remaining). Factors related to the accident were: lack of power in the right engine, and the unfavorable meteorological conditions at the airport.

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 powerTakeoff - roll/run
Weather condition - high density altitudeFactor
Weather condition - tailwindFactor
Powerplant - output lowFactor
Maintenance - not performedCompany/operator managementCause
Operation with known deficiencies in equipment - performedCompany/operator managementCause
Preflight planning/preparation - inadequatePilot in commandCause
Abort - not performedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

On a previous flt, low power was noted in the rgt eng, the rgt eng fuel flow was 5 to 8 gal/hr less than the left eng & the rgt eng temp (itt) was abt 500 deg less than the left. A decision was made to ferry the acft to a maint facility to have the rgt eng examined. The plt took off on a 5186' rwy (rwy 2C) with a lgt tail wind in 95 deg temp, though the arpt had longer rwys (7702', 8000' & 8500'). A witness noted the acft lifted off at the end of the rwy (charts showed the takeoff roll with normal power should have been abt 3100'). Witnesses rprtd the acft remained low (nearly hitting a 55' lgt standard) until it rolled rgt & 'dropped like a rock.' Impact occurred in a rgt wing low attitude abt 2 mi fm the dep end of rwy 2C. The acft was extensively dmgd by impact & fire; no preimpact part failure was fnd. Both engs had evidence of eng rotation at the time of impact. The operator's lead mechanic had rprtd for duty abt 3 hrs before the acdnt flt, but he had not been informed of the eng problem before the acft took off.

Aircraft

Registration
N82MA
Reported as
Mitsubishi MU-2B-36
Category
Airplane
Serial number
665
Airframe hours
6,714
Engine
Garrett TPE-331, 715 horsepower, turbo prop
Damage
Destroyed
Fire
On-Ground
Flight
Ferry · Part 91
Operator
Tennessee Air Corp.
Registered owner
B And J Leasing, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 26, 1990 · 50 hours before
Departed
BNA
Destination
MBT · Murfreesboro, TN
Airport
BNA · Nashville Intl, runway 2C, 5,186 × 150 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
49
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
9,379 total · 5,854 in this make and model · 8,286 as pilot in command · 108 in the last 90 days · 37 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 5 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
95 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
BNA

FAA reports on this event · 1

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