NTSB Identification: SEA87FA051.
The docket is stored on NTSB microfiche number 32817.
Accident occurred Thursday, January 29, 1987 in VANCOUVER, WA
Probable Cause Approval Date: 03/21/1988
Aircraft: CESSNA 150J, registration: N50922
Injuries: 2 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

AIRCRAFT WAS RETURNING FROM STAGE 3 INSTRUCTIONAL FLIGHT DURING WHICH INSTRUCTOR NORMALLY ALLOWED STUDENT TO FLY. EVIDENCE INDICATES AIRCRAFT PASSED IN VICINITY OF HEAVY BIRD ACTIVITY AND STUDENT EXECUTED NOSE DOWN BIRD AVOIDANCE MANEUVER. INSTRUCTOR, FOR UNKNOWN REASONS POSSIBLY RELATED TO PREVIOUS BIRD STRIKE OCCURRENCE, EXECUTED A COUNTER MANEUVER (ROLLING PULLUP) WHICH RESULTED IN DESIGN LIMITATIONS OF RIGHT WING BEING EXCEEDED. NO EVIDENCE OF ANY PILOT IMPAIRMENT NOR AIRCRAFT MECHANICAL MALFUNCTIONS WERE FOUND.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

OBJECT..BIRD(S)

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING,SPAR..FAILURE,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

REMEDIAL ACTION..EXCESSIVE..PILOT IN COMMAND(CFI)


Contributing Factors

MANEUVER..INTENTIONAL..DUAL STUDENT


Contributing Factors

VISUAL/AURAL PERCEPTION..DUAL STUDENT


Contributing Factors

EXPECTANCY..PILOT IN COMMAND(CFI)


Contributing Factors

ANXIETY/APPREHENSION..PILOT IN COMMAND(CFI)

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