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NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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December 29, 1988 · Gulfstream Commander 690A Commander · N690MF

St. Paul, MN

Overview

Report Status
Preliminary report
Event Type
Incident
Date
December 29, 1988
Injury Outcomes
No injuries (1 uninjured)
Location
St. Paul, MN
Aircraft
Gulfstream Commander 690A Commander
Tail Number
N690MF
Operator
Great Western Aviation
Injuries
None
NTSB Number
MKC89IA048

THE PIC HAD PREFLTD HIS COMMANDER TURBOPROP AND PREPARED FOR TAKEOFF FM THE ST. PAUL ARPT. DURING THE TAKEOFF ROLL JUST AS THE ACFT WAS ROTATED TO TAKEOFF ATTITUDE, THE RT ENG FAILED. THE PIC EASED THE ACFT BACK TO THE RWY, REDUCED PWR AND CAME TO A STOP ON THE REMAINING RWY. WITH THE REMAINING ENG THE PIC TAXIED BACK TO THE RAMP AREA. INSP OF THE ENG REVEALED A FAILED PLENUM CHAMBER, WITH A LARGE TEAR IN THE INCONEL 718 SHEET METAL. METALLURGICAL EXAM OF THE PLENUM REVEALED MULTIPLE FATIGUE FRACTURE AREAS IN THE WELDED SEAMS. THE ENG WAS SUBSEQUENTLY INSPCTD, A SERVICEABLE PLENUM WAS USED AS A REPLACEMENT AND THE ENGINE WAS RETURNED TO SERVICE.

Full Narrative

THE PIC HAD PREFLTD HIS COMMANDER TURBOPROP AND PREPARED FOR TAKEOFF FM THE ST. PAUL ARPT. DURING THE TAKEOFF ROLL JUST AS THE ACFT WAS ROTATED TO TAKEOFF ATTITUDE, THE RT ENG FAILED. THE PIC EASED THE ACFT BACK TO THE RWY, REDUCED PWR AND CAME TO A STOP ON THE REMAINING RWY. WITH THE REMAINING ENG THE PIC TAXIED BACK TO THE RAMP AREA. INSP OF THE ENG REVEALED A FAILED PLENUM CHAMBER, WITH A LARGE TEAR IN THE INCONEL 718 SHEET METAL. METALLURGICAL EXAM OF THE PLENUM REVEALED MULTIPLE FATIGUE FRACTURE AREAS IN THE WELDED SEAMS. THE ENG WAS SUBSEQUENTLY INSPCTD, A SERVICEABLE PLENUM WAS USED AS A REPLACEMENT AND THE ENGINE WAS RETURNED TO SERVICE.

Flight

Event TypeIncident
Event Time07:00 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireIflt
Aircraft ExplosionIflt

Aircraft

AircraftGulfstream Commander 690A Commander
Tail NumberN690MF
Aircraft CategoryAir
OperatorGreat Western Aviation
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE-331-5251K · Turboprop · 717
Seats6

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 35 · First Class

Conditions

ConditionsVMC
LightDawn
Wind120° @ 7 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point5 C / 10 C
Altimeter30.00 inHg
Observation Time12:51
Weather SourceWFAC

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Appendix: Source Data