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Accident
Last updated: 19 October 2017
Status:Definitief
Datum:woensdag 5 maart 1969
Tijd:17:38
Type:Silhouette image of generic HERN model; specific model in this crash may look slightly different
de Havilland DH-114 Heron 2D
Luchtvaartmaatschappij:Prinair
Registratie: N563PR
Constructienummer: 14125
Bouwjaar: 1967
Aantal vlieguren:4167
Motoren: 4 de Havilland Gipsy Queen 30-2
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 17 / inzittenden: 17
Totaal:slachtoffers: 19 / inzittenden: 19
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:24 km (15 mijl) SE of San Juan (   Puerto Rico)
Fase: Nadering (APR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Saint Thomas Airport (STT/TIST), Amerikaanse Maagdeneilanden
Vliegveld van aankomst:San Juan-Isla Verde International Airport (SJU/TJSJ), Puerto Rico
Vluchtnummer: 277
Beschrijving:
Prinair flight 277 departed Saint Thomas at 17:15 for an IFR flight to San Juan. At 17:32, the flight contacted San Juan Approach Control and advised that the flight was maintaining 4,000 feet. The trainee approach controller replied:"Prinair two seven seven San Juan Approach Control radar contact three miles east of Isla Verde fly a heading of two five zero for a vector to ILS final maintain four thousand." Actually the flight was 3 miles east of the Fajardo intersection instead of the Isla Verde intersection which is located about 10 miles west of the Fajardo intersection. One minute later the Heron was cleared to descend to 3,000 feet. At 17:38, after being vectored for a runway 07 approach, the airplane contacted trees and crashed, coming to rest near the top of a knoll in the Sierra de Luquillo mountains at an elevation of about 2400 feet (731 m).

Probable Cause:

PROBABLE CAUSE: "The vectoring of the aircraft into mountainous terrain, under IFR conditions, without adequate obstruction clearance altitude by a controller who, for reasons beyond his control, was performing beyond the safe limits of his performance capability and without adequate supervision."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 2 months
Accident number: NTSB/AAR-70-09
Download report: Final report


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NTSB issued 2 Safety Recommendations

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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 Saint Thomas Airport en San Juan-Isla Verde International Airport bedraagt 108 km (68 miles).
Accident location: Global; accuracy within tens or hundreds of 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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DH-114 Heron

  • 149 built
  • 25e ongeval
  • 13e dodelijk ongeval
  • The zwaarste ongeval
» safety profile

 Puerto Rico
  • 4e zwaarste ongeval
» safety profile