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NTSB Report
February 12, 1988 · Mitsubishi MU-2B-35 · N339MA
Philadelphia, PA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
February 12, 1988
Injury Outcomes
No injuries (1 uninjured)
Location
Philadelphia, PA
Aircraft
Mitsubishi MU-2B-35
Tail Number
N339MA
Operator
Epps Air
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC88LA085
THE MITSUBISHI MU-2B-35 LANDED AND DAMAGE WAS OBSERVED ON THE UNDERSIDE OF THE LEFT WING MIDWAY BETWEEN THE ENGINE AND TIP TANK AND OUTBOARD TO THE TIP TANK. FURTHER EXAMINATION OF THE WING SHOWED A BROKEN LOWER FRONT WING SPAR AND A BENT REAR LOWER WING SPAR. THE PILOT SAID HE ENCOUNTERED TURBULENCE WHILE CRUISING AT 250 KTS. HE SAID HE SLOWED TO 170 KTS AND THEN RESUMED SPEED TO 250 KTS. AFTER MITSUBISHI EXAMINED THE WING, THEY SAID THE DAMAGE WAS CAUSED BY EITHER A HARD LANDING OR LANDING WITH EXCESS FUEL IN THE TIP TANK. THEY ALSO SAID IT WAS LIKELY THAT THE AIRCRAFT HAD BEEN FLOWN SEVERAL TIMES WITH THE WING DAMAGE PRESENT.
Full Narrative
THE MITSUBISHI MU-2B-35 LANDED AND DAMAGE WAS OBSERVED ON THE UNDERSIDE OF THE LEFT WING MIDWAY BETWEEN THE ENGINE AND TIP TANK AND OUTBOARD TO THE TIP TANK. FURTHER EXAMINATION OF THE WING SHOWED A BROKEN LOWER FRONT WING SPAR AND A BENT REAR LOWER WING SPAR. THE PILOT SAID HE ENCOUNTERED TURBULENCE WHILE CRUISING AT 250 KTS. HE SAID HE SLOWED TO 170 KTS AND THEN RESUMED SPEED TO 250 KTS. AFTER MITSUBISHI EXAMINED THE WING, THEY SAID THE DAMAGE WAS CAUSED BY EITHER A HARD LANDING OR LANDING WITH EXCESS FUEL IN THE TIP TANK. THEY ALSO SAID IT WAS LIKELY THAT THE AIRCRAFT HAD BEEN FLOWN SEVERAL TIMES WITH THE WING DAMAGE PRESENT.
Flight
Event TypeAccident
Event Time14:45 EST
Nearest AirportPhiladelphia (0nm N)
Runway27R
Runway Length9500 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMitsubishi MU-2B-35
Tail NumberN339MA
Aircraft CategoryAir
DamageSubstantial
OperatorEpps Air
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE-331-6-251 · Turboprop · 724
Seats8
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 28 · First Class
Conditions
ConditionsIMC
LightDaylight
WindCalm
Visibility2 sm
CeilingOvercast 400 ft
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO