ASN Aircraft accident Lockheed L-188A Electra RP-C1061 Guam-Agana NAS (NGM)
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Status:Accident investigation report completed and information captured
Date:Friday 4 June 1976
Time:14:47 UTC
Type:Silhouette image of generic L188 model; specific model in this crash may look slightly different
Lockheed L-188A Electra
Operator:Air Manila International
Registration: RP-C1061
MSN: 1007
First flight: 1958-09-17 (17 years 9 months)
Engines: 4 Allison 501-D13
Crew:Fatalities: 12 / Occupants: 12
Passengers:Fatalities: 33 / Occupants: 33
Total:Fatalities: 45 / Occupants: 45
Ground casualties:Fatalities: 1
Aircraft damage: Damaged beyond repair
Location:1,5 km (0.9 mls) NE of Guam-Agana NAS (NGM) (   Guam)
Phase: Initial climb (ICL)
Nature:Int'l Non Scheduled Passenger
Departure airport:Guam-Agana NAS (NGM), Guam
Destination airport:Manila International Airport (MNL/RPLL), Philippines
Flightnumber: 702
At 21:09 GMT Air Manila flight 702 departed Wake Island for Manila, with an enroute stop at Agana Naval Air Station (NAS). The aircraft arrived at 02:11 GMT. After offloading the passengers maintenance was performed on the no. 2 propeller feathering mechanism. Shortly after the work was completed, the passengers boarded and the flightcrew started all four engines without difficulty. The flightcrew taxied the aircraft to the end of runway 06L, made a right turn onto the runway, and executed a rolling takeoff. The aircraft lifted off the 10,015-foot runway about 7500 feet down the runway. During or just after liftoff the No. 3 propeller was feathered. The aircraft climbed to 100 feet while yawing to the right. The crew retracted the landing gear and flaps before the aircraft reached the apex of the climb. It then rotated to a nose-high attitude, appeared to become laterally unstable, and struck the rising terrain in a tail-low attitude. Impact was about 4,300 feet beyond the end of the runway. The aft portion of the aircraft fuselage dragged along the ground for 220 feet in a right wing down attitude, after which the aircraft slid off the brow of a 13-foot embankment, crashed through the chain link perimeter fence at Agana NAS, crossed a highway, and burst into flames. The aircraft came to rest in an open area between residential areas, about 4,900 feet beyond the end of runway 06L. As the aircraft slid across the highway, it struck an automobile on the highway; the driver of the car was killed. A woman and her son, who were standing outside their residence just south of the impact site, were seriously burned by the heat of the burning fuel and were seriously injured by flying debris.

Probable Cause:

PROBABLE CAUSE: "The loss of climb capability after the crew retracted the flaps at too low an altitude to clear the rising terrain. The flaps were retracted after the no.3 propeller feathered as the aircraft lifted off the runway. Contributing to the accident was the captain's decision to continue the take-off after an engine failed before reaching the rotation speed."

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 4 months
Accident number: NTSB/AAR-77-06
Download report: Final report

» Aviation News 25.06.1976
» NTSB-AAR-77-6

Follow-up / safety actions


photo of Lockheed-L-188A-Electra-RP-C1061
accident date: 04-06-1976
type: Lockheed L-188A Electra
registration: RP-C1061

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Guam-Agana NAS to Manila International Airport as the crow flies is 2553 km (1595 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Lockheed L-188

  • 222 built
  • 26th loss
  • 15th fatal accident
  • 8th worst accident (at the time)
  • 10th worst accident (currently)
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  • 2nd worst accident (at the time)
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