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NTSB Report
May 10, 1991 · Mcdonnell Douglas DC-3C · N134FS
Aguadilla, PR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 10, 1991
Injury Outcomes
2 injuries (2 fatalities)
Location
Aguadilla, PR
Aircraft
Mcdonnell Douglas DC-3C
Tail Number
N134FS
Operator
Four Star Aviation
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
MIA91FA140
THE AIRPLANE SUSTAINED A PARTIAL LOSS OF ENGINE POWER ON THE LEFT ENGINE ON TAKEOFF CLIMB DUE TO THE FAILURE OF THE NO. 8 ENGINE ASSEMBLY CYLINDER. THE AIRPLANE WAS OBSERVED BY WITNESSES AT 400 FEET AGL IN A 20 DEGREE LEFT BANK WHILE MANEUVERING TO RETURN TO THE DEPARTURE AIRPORT. THE ANGLE OF BANK INCREASED TO 60 DEGREES WITH A NOTICEABLE DECREASE IN AIRSPEED WHILE THE AIRPLANE DESCENDED BELOW 300 FEET AGL. THE LEFT WING DROPPED 90 DEGREES TO THE LEFT AND THE NOSE PITCHED DOWN VERTICALLY. THE AIRPLANE APPEARED TO REGAIN ELEVATOR AUTHORITY AND LEVELED OUT BEFORE ENCOUNTERING A SECONDARY STALL. THE AIRPLANE COLLIDED WITH THE TERRAIN AND WAS DESTROYED BY POSTCRASH FIRE.
NTSB Probable Cause
THE PILOT IN COMMAND'S FAILURE TO MAINTAIN AIRSPEED (VS) AFTER A PARTIAL LOSS OF ENGINE POWER ON THE LEFT ENGINE DUE TO FAILURE OF THE NO. 8 ENGINE ASSEMBLY CYLINDER. THIS RESULTED IN AN IN FLIGHT LOSS OF CONTROL (STALL), AND IN FLIGHT COLLISION WITH TERRAIN.
Full Narrative
THE AIRPLANE SUSTAINED A PARTIAL LOSS OF ENGINE POWER ON THE LEFT ENGINE ON TAKEOFF CLIMB DUE TO THE FAILURE OF THE NO. 8 ENGINE ASSEMBLY CYLINDER. THE AIRPLANE WAS OBSERVED BY WITNESSES AT 400 FEET AGL IN A 20 DEGREE LEFT BANK WHILE MANEUVERING TO RETURN TO THE DEPARTURE AIRPORT. THE ANGLE OF BANK INCREASED TO 60 DEGREES WITH A NOTICEABLE DECREASE IN AIRSPEED WHILE THE AIRPLANE DESCENDED BELOW 300 FEET AGL. THE LEFT WING DROPPED 90 DEGREES TO THE LEFT AND THE NOSE PITCHED DOWN VERTICALLY. THE AIRPLANE APPEARED TO REGAIN ELEVATOR AUTHORITY AND LEVELED OUT BEFORE ENCOUNTERING A SECONDARY STALL. THE AIRPLANE COLLIDED WITH THE TERRAIN AND WAS DESTROYED BY POSTCRASH FIRE.
Flight
Event TypeAccident
Event Time11:20 AST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledUnknown
Aircraft FireGrd
Aircraft ExplosionGrd
Aircraft
AircraftMcdonnell Douglas DC-3C
Tail NumberN134FS
Aircraft CategoryAir
DamageDestroyed
OperatorFour Star Aviation
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsP&W · R1830-90D · Reciprocating · 1200
Seats2
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 42 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind80° @ 15 kt
Visibility15 sm
CeilingNone
Altimeter30.00 inHg
Observation Time15:53
Weather SourceWFAC