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NTSB Report
August 4, 1987 · De Havilland DHC-6 · N931MA
Palmdale, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 4, 1987
Injury Outcomes
No injuries (11 uninjured)
Location
Palmdale, CA
Aircraft
De Havilland DHC-6
Tail Number
N931MA
Operator
Resort Commuter
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX87FA290
A DEHAVILLAND DHC-6, N931MA, OPERATING AS TRANSWORLD EXPRESS FLT 7591 (TWE 7591) & A CESSNA 172N, N737EV, COLLIDED ABT 10 MILES WEST/SOUTHWEST OF PALMDALE, CA AT ABT 5500 FT MSL. TWE 7591 WAS DESCENDING ON A 355 DEG MAG HEADING; N737EV WAS LEVEL AND WAS MAINTAINING A 060 DEG MAG HEADING. THE CAPT ABOARD TWE 7591 WAS FLYING THE AIRPLANE & THE FIRST OFFICER OBSVD N737EV JUST PRIOR TO IMPACT AND TOOK THE CONTROLS AND EXECUTED AN ABRUPT RIGHT TURN; THE CAPT THEN CONTINUED THE DESCENDING RIGHT TURN BUT TO NO AVAIL - THE AIRPLANE'S LEFT WING COLLIDED WITH N737EV. THE PLT OF N737EV REPORTED THAT HE DID NOT SEE TWE 7591 UNTIL THE COLLISION. THE CONVERGENCE ANGLE OF 7591 WAS 53 DEG AND 62 DEG FOR 737EV. BOTH AIRPLANES LANDED SAFELY - TWE 7591 LANDED AT WILLIAM J. FOX ARPT, LANCASTER, CA. & N737EV LANDED AT PALMDALE ARPT.
Full Narrative
A DEHAVILLAND DHC-6, N931MA, OPERATING AS TRANSWORLD EXPRESS FLT 7591 (TWE 7591) & A CESSNA 172N, N737EV, COLLIDED ABT 10 MILES WEST/SOUTHWEST OF PALMDALE, CA AT ABT 5500 FT MSL. TWE 7591 WAS DESCENDING ON A 355 DEG MAG HEADING; N737EV WAS LEVEL AND WAS MAINTAINING A 060 DEG MAG HEADING. THE CAPT ABOARD TWE 7591 WAS FLYING THE AIRPLANE & THE FIRST OFFICER OBSVD N737EV JUST PRIOR TO IMPACT AND TOOK THE CONTROLS AND EXECUTED AN ABRUPT RIGHT TURN; THE CAPT THEN CONTINUED THE DESCENDING RIGHT TURN BUT TO NO AVAIL - THE AIRPLANE'S LEFT WING COLLIDED WITH N737EV. THE PLT OF N737EV REPORTED THAT HE DID NOT SEE TWE 7591 UNTIL THE COLLISION. THE CONVERGENCE ANGLE OF 7591 WAS 53 DEG AND 62 DEG FOR 737EV. BOTH AIRPLANES LANDED SAFELY - TWE 7591 LANDED AT WILLIAM J. FOX ARPT, LANCASTER, CA. & N737EV LANDED AT PALMDALE ARPT.
Flight
Event TypeAccident
Event Time12:19 PDT
Nearest AirportPALMDALE (0nm N)
Runway6
Runway Length5001 ft
Runway Width150 ft
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDe Havilland DHC-6
Tail NumberN931MA
Aircraft CategoryAir
DamageSubstantial
OperatorResort Commuter
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PT-6-20 · Turboprop · 550 | Lycoming · O-320-H2AD · Reciprocating · 160
Seats14
People & Injuries
Injury SummaryNo injuries (11 uninjured)
Fatal0
Serious0
Minor0
Uninjured11
Total11
Crew 1Age 41 · First Class
Crew 2Age 31 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 4 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter29.00 inHg
Observation Time19:23
Weather SourceWFAC