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ASN Wikibase Occurrence # 41301
Last updated: 22 January 2020
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Date:11-JUN-1990
Time:16:20
Type:Silhouette image of generic CH7B model; specific model in this crash may look slightly different
Champion 7KCAB
Owner/operator:Northwest Aviation
Registration: N1877G
C/n / msn: 108
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Pocatello, ID -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Training
Departure airport:Pocatello, ID (PIH)
Destination airport:
Investigating agency: NTSB
Narrative:
THE ACFT WAS ON A STUDENT TRAINING FLT IN AN AREA WHERE THE INSTRUCTOR WAS KNOWN TO HAVE STUDENTS PERFORM LOW LEVEL CONTOUR FOLLOWING FLTS AT ALTITUDES AS LOW AS 10 FT AGL FOLLOWING THE WINDING SNAKE RIVER. THESE FLIGHTS REQUIRED CONSTANT STEEP TURNS WITH 60-70 DEG BANK ANGLES TO STAY OVER THE RIVER. THE 54-HR STUDENT PILOT WAS ON HIS 2ND LOCAL TRAINING FLT SINCE RESUMING FLT TRAINING AFTER BEING INACTIVE FOR 8 YEARS. THE ACFT WAS OVER GW AND OUT OF AFT CG LIMITS FOR AEROBATIC FLIGHT. WINDS AT THE TIME OF THE ACCIDENT WERE 18 KNOTS GUSTING TO 27. CAUSE: THE INSTRUCTOR PILOTS POOR JUDGEMENT IN PERFORMING LOW ALTITUDE STEEP TURN MANEUVERS RESULTING IN AN INADVERTANT STALL AT AN ALTITUDE TOO LOW FOR RECOVERY. FACTORS IN THE ACCIDENT WERE THE OVER GROSS WEIGHT AND OUT-OF-CG AIRCRAFT LOADING, AND STRONG GUSTY WINDS.

Sources:

NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001212X23536


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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