# NTSB ATL90FA163: Mitsubishi MU-2B-36, N82MA, Nashville, TN, September 6, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: September 6, 1990, 11:31 local (16:31 UTC)
- Place: Nashville, TN
- Coordinates: 36.160503, -86.670822 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.1605&lon=-86.6708&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report April 13, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 8148
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL90FA163
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8148/pdf
- Page: https://openairdocs.org/ntsb/ATL90FA163

## 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

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power, takeoff - roll/run
  - weather condition - high density altitude (contributing factor)
  - weather condition - tailwind (contributing factor)
  - powerplant - output low (contributing factor)
  - maintenance - not performed, company/operator management (cause)
  - operation with known deficiencies in equipment - performed, company/operator management (cause)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - abort - not performed, pilot in command (cause)
- In flight collision with terrain/water, descent - 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](https://openairdocs.org/deregistered/N82MA-1993-01-22), registration cancelled 1993-01-22, S/N 665 (OpenAirDocs)
- Reported make and model: MITSUBISHI MU-2B-36
- Registry model: [Mitsubishi MU-2B-36](https://openairdocs.org/model/mitsubishi-mu-2b-36) (registry code 5780412) (OpenAirDocs)
- Category: Airplane
- Serial number: 665
- Airframe hours: 6714
- Engines: 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

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; 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 (OpenAirDocs).

- [Accident 19900906038359A](https://openairdocs.org/incident/19900906038359A), Sep 6, 1990: Mtsbsi MU2B36, Nashville, TN, Destroyed, 1 fatal. Slow takeoff. Hot day. Stalled, crashed and burned. No engine defects found.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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