Date:	Saturday 2 March 1963
Time:
Type:	Douglas C-47B-30-DK (DC-3)
Owner/operator:	Philippine Air Lines
Registration:	PI-C489
MSN:	32863/16115
Year of manufacture:	1945
Engine model:	Pratt & Whitney R-1830-90C
Fatalities:	Fatalities: 27 / Occupants: 27
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	Mt. Boca -   Philippines
Phase:	En route
Nature:	Passenger - Scheduled
Departure airport:	Cotabato-Awang Airport (CBO/RPMC)
Destination airport:	Davao City-Francisco Bangoy International Airport (DVO/RPMD)
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Flight 984 departed Cotobato at 09:40 for a 45-minute flight to Davao.
Nothing more was heard from the flight after a request for Davao weather. The plane was later found to have crashed into Mt. Boca at 3000 feet, 50 miles SE of Davao.

PROBABLE CAUSE: "The probable cause of the accident was due to navigational error, en-route and during let-down. Contributory factors were the limited visibility and the crosswind, all existing on the final phase of the flight."

ICAO Accident Digest No.15 - Volume II, Circular 78-AN/66 (159-162)

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