Date: | Monday 20 March 2017 |
Time: | 04:05 |
Type: | Swearingen SA226-TC Metro II |
Owner/operator: | Western Air Express |
Registration: | N158WA |
MSN: | TC-411 |
Year of manufacture: | 1981 |
Total airframe hrs: | 28602 hours |
Engine model: | Garrett TPE331-10UA |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial, repaired |
Category: | Accident |
Location: | Boise Air Terminal, ID (BOI/KBOI) -
United States of America
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Phase: | Take off |
Nature: | Cargo |
Departure airport: | Boise Air Terminal, ID (BOI/KBOI) |
Destination airport: | Denver-Centennial Airport, CO (APA/KAPA) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:A Swearingen SA226-TC, N158WA, was substantially damaged due to foreign object damage to the airplane's propeller and fuselage during initial takeoff/climb from Boise Air Terminal, Idaho, USA.
According to Federal Aviation Administration personnel, about the time the airplane was rotating from runway 10L, the pilot experienced a light vibration; he subsequently returned to BOI and landed uneventfully. During a post-landing examination of the airplane, it was revealed that a portion of the outboard section of a left propeller blade, which had fragmented into 2 pieces, was missing. Additionally, about a 4 inch by 4 inch puncture hole was observed to have gone through the left forward side of the fuselage just aft of the main air stair door; a piece of the propeller blade was found in the cabin. It was further noted during a runway sweep for foreign objects shortly after the occurrence, that a screw driver which had been used during maintenance on the airplane earlier, and the second piece of the propeller blade tip, were both recovered from the departure runway in the same approximate location from where the airplane would have rotated.
PROBABLE CAUSE: "Company maintenance personnel's failure to remove a screwdriver that was left lodged in the windshield wiper area of the forward fuselage during maintenance and subsequently became dislodged on takeoff/initial climb and collided with a left propeller blade."
Accident investigation:
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Investigating agency: | NTSB |
Report number: | GAA17CA114 |
Status: | Investigation completed |
Duration: | 1 year and 7 months |
Download report: | Final report |
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Sources:
NTSB Location
Images:
photo (c) NTSB; Boise Air Terminal, ID (BOI); March 2017; (publicdomain)
photo (c) NTSB; Boise Air Terminal, ID (BOI); March 2017; (publicdomain)
photo (c) NTSB; Boise Air Terminal, ID (BOI); March 2017; (publicdomain)
Revision history:
Date/time | Contributor | Updates |