Accident description
Last updated: 24 April 2014
Status:Final
Date:Monday 6 January 1969
Time:20:35
Type:Convair CV-580
Operator:Allegheny Airlines
Registration: N5825
C/n / msn: 386
First flight: 1956
Total airframe hrs:27285
Engines: 2 Allison 501-D13
Crew:Fatalities: 2 / Occupants: 3
Passengers:Fatalities: 9 / Occupants: 25
Total:Fatalities: 11 / Occupants: 28
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:8 km (5 mls) NW of Bradford Airport, PA (BFD) (   United States of America) show on map
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Harrisburg International Airport, PA (MDT/KMDT), United States of America
Destination airport:Bradford Airport, PA (BFD/KBFD), United States of America
Flightnumber: 737
Narrative:
Allegheny Airlines Flight 737 was a scheduled passenger flight from Washington, DC, to Detroit, MI, with en route stops at Harrisburg, Bradford, and Erie, PA. The flight was uneventful until it arrived in the Bradford area, about 20:22. About 20:23, Erie Approach Control asked flight 737 to report their distance to the airport: "Allegheny seven thirty seven, what are you showing DME from Bradford?". Upon which the crew replied, "Fifteen". Erie Approach Control then instructed, "... descend and cruise four thousand via Victor thirty three and cleared for the VOR thirty two (runway 32) approach to the Bradford Airport, report leaving six and Bradford's current weather sky partially obscured, measured ceiling eight hundred overcast, visibility one and one half and light snow showers, wind one seventy degrees at ten (knots) Bradford altimeter twenty nine point four nine." At ten miles from the airport Flight 737 asked for clearance to make its instrument approach to runway 14 instead of runway 32. The Bradford FSS Specialist obtained approval for this change from Erie Approach Control and so advised the flight. At 20:31 the flight reported completing the procedure turn inbound. The Convair clipped treetops 4,7nm short of the airport and cut a swath through trees bordering a fairway of the Pine Acres Golf Course. The aircraft came to rest inverted.
On Dec.24 1968 another Allegheny CV-580 crashed while approaching Bradford in about the same circumstances.


PROBABLE CAUSE: "The Safety Board is unable to determine precisely the probable cause of this accident. Of some 13 potential causes examined by the Board, three remain after final analysis. They are: 1) misreading of the altimeter by the captain, 2) a malfunction of the captain's altimeter after completion of the instrument approach procedure turn, and 3) a misreading of the instrument approach chart. Of these three, no single one can be accepted or rejected to the exclusion of another based on the available evidence."

Events:

Sources:
» ICAO Accident Digest Circular 107-AN/81 (329-347)

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - USA
report status: Final
report number: NTSB/AAR-70-10
report released:27-MAY-1970
duration of investigation:506 days (1 year 4.7 months)
download report: Allegheny Airlines, Inc., Allison Prop Jet Convair 440, N5825, near Bradford, Pennsylvania, January 6, 1969. (NTSB/AAR-70-10)

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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Harrisburg International Airport, PA to Bradford Airport, PA as the crow flies is 237 km (148 miles).

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