AIRCRAFT ACCIDENT REPORT. PUERTO RICO INTERNATIONAL AIRLINES, INC. DEHAVILLAND DH-114, N570PR, SAN JUAN, PUERTO RICO, JULY 11, 1975

At 0431 A.s.t., July 11, 1975, a propeller blade separated from the No. 2 propeller of Puerto Rico International Airlines, Inc., Flight 303, during takeoff at Puerto Rico International Airport, San Juan, Puerto Rico. The takeoff was discontinued and the airplane was stopped on the runway pavement. Of the 11 occupants, 1 was injured slightly. The airplane's flight controls, electrical system, and No. 2 engine were damaged heavily. The National Transportation Safety Board determines that the probable cause of the accident was the separation of the No. 1 propeller blade of the No. 2 propeller assembly. The blade separated as a result of vibratory stresses which induced fatigue cracks not readily detectable during routine preflight inspections. Contributing to the accident were inadequate overhaul inspection procedures at a certificated repair station and inadequate dissemination and enforcement of recommended maintenance practices by the Federal Aviation Administration.

  • Supplemental Notes:
    • See also NTISUB/B/104-76/011. Also available on subscription, North American Continent price $35.00/year; all others write for quote.
  • Corporate Authors:

    National Transportation Safety Board

    490 L'Enfant Plaza, SW
    Washington, DC  USA  20594

    D.C. Bureau of Aviation Safety.

    ,    
  • Publication Date: 1976-4-14

Media Info

  • Pagination: 35 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00137008
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NTSB-AAR-76-13
  • Files: NTIS
  • Created Date: Aug 23 1976 12:00AM