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Last updated: 19 May 2019
Status:Definitief
Datum:vrijdag 11 april 1952
Tijd:12:20 AST
Type:Silhouette image of generic DC4 model; specific model in this crash may look slightly different
Douglas DC-4
Luchtvaartmaatschappij:Pan American World Airways (Pan Am)
Registratie: N88899
Constructienummer: 10503
Bouwjaar: 1945
Aantal vlieguren:20835
Motoren: 4 Pratt & Whitney R-2000
Bemanning:slachtoffers: 0 / inzittenden: 5
Passagiers:slachtoffers: 52 / inzittenden: 64
Totaal:slachtoffers: 52 / inzittenden: 69
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:18 km (11.3 mijl) NW van San Juan-Isla Grande Airport (SIG) (   Puerto Rico)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:San Juan-Isla Grande Airport (SIG/TJIG), Puerto Rico
Vliegveld van aankomst:New York-Idlewild International Airport, NY (IDL/KIDL), Verenigde Staten
Vluchtnummer:PA526A
Beschrijving:
The aircraft, named "Clipper Endeavour" took off from San Juan at 12:11 for a flight to New York when the no. 3 engine failed. The prop was feathered at 350 feet and the crew elected to return to San Juan. The aircraft reached an altitude of 550 feet but the no. 4 engine ran roughly and height couldn't be maintained. To avoid a possible forced landing in a congested area or on coral reef, the aircraft was ditched 11 miles NW of San Juan Airport, 4,5 miles offshore. The rear fuselage broke off behind the bulkhead aft of the main cabin. The plane sank in about 3 minutes.

Probable Cause:

PROBABLE CAUSE: "a) The company's inadequate maintenance in not changing the No. 3 engine which resulted in its failure immediately subsequent to take-off, and b) The persistent action of the captain in attempting to re-establish a climb, without using all available power, following the critical loss of power to another engine. This resulted in a nose-high attitude, progressive loss of airspeed and the settling of the aircraft at too low an altitude to effect recovery,"

Bronnen:
» CAB File No. 1-0026
» Ditch or crash-land?/B.W. Townshend, 1965 (30-32)
» ICAO Circular 38-AN/33 (58-60)


Veiligheidsmaatregelen
It was recommended to, in future, brief passengers about location and usage of floatation equipment and emergency exits before over-water flights.

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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 San Juan-Isla Grande Airport en New York-Idlewild International Airport, NY bedraagt 2559 km (1599 miles).
Accident location: Exact; as reported in the official accident report.

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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Douglas DC-4

  • 1242 built
  • 164e ongeval
  • 87e dodelijk ongeval
  • 6e zwaarste ongeval (toen het plaatsvond)
  • 18e zwaarste ongeval (op dit moment)
» safety profile

 Puerto Rico
  • 2e zwaarste ongeval
» safety profile