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Accident
Last updated: 14 December 2017
Status:Definitief
Datum:vrijdag 8 maart 1968
Tijd:19:18
Type:Silhouette image of generic F27 model; specific model in this crash may look slightly different
Fairchild F-27
Luchtvaartmaatschappij:Air Manila International
Registratie: PI-C871
Constructienummer: 19
Bouwjaar: 1958
Aantal vlieguren:21194
Bemanning:slachtoffers: 4 / inzittenden: 4
Passagiers:slachtoffers: 10 / inzittenden: 10
Totaal:slachtoffers: 14 / inzittenden: 14
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:ca 2 km N off Ibajay (   Filippijnen)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Manila International Airport (MNL/RPLL), Filippijnen
Vliegveld van aankomst:Mactan Island-Chicago Naval Air Base (NOP/RPVM), Filippijnen
Vluchtnummer: 507
Beschrijving:
Air Manila Flight 507 departed Manila (MNL) at 18:14 for a flight to Mactan at FL130. Thunderstorms existed along the route and the crew probably deviated some 10nm right of the airway to avoid the hazardous weather. It was believed that the aircraft suddenly flew into a hidden cumulonimbus that may have appeared as a minor build up, but which was actually a fully developed and active cumulonimbus. Air loads associated with a sudden pull up manoeuvre, combined with gust loading probably caused both horizontal stabilizers to fail. The right-hand outer wing then failed due to air loads generated by a high angle of attack. The F-27 then went out of control and the fuel, escaping from the ruptured fuel tanks, ignited. The aircraft was flown at 180 knots, 40 knots more than recommended turbulent air operating speed.
Parts of the aircraft fell into the sea, just offshore.

Probable Cause:

PROBABLE CAUSE: "In-flight structural failure due to air loads exceeding the design strength, while flying in a thunderstorm cell."

Bronnen:
» ICAO Circular 107-AN/81 (215-221)


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Manila International Airport en Mactan Island-Chicago Naval Air Base bedraagt 564 km (352 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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Fairchild F-27

  • 129 built
  • 11e ongeval
  • 8e dodelijk ongeval
  • 5e zwaarste ongeval (toen het plaatsvond)
  • 11e zwaarste ongeval (op dit moment)
» safety profile

 Filippijnen
  • 19e zwaarste ongeval (toen het plaatsvond)
  • 33e zwaarste ongeval (op dit moment)
» safety profile