Serious incident Boeing 727-123 N1984,
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ASN Wikibase Occurrence # 380918
 
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Date:Wednesday 7 September 1983
Time:16:00 LT
Type:Silhouette image of generic B721 model; specific model in this crash may look slightly different    
Boeing 727-123
Owner/operator:American Airlines
Registration: N1984
MSN: 18440/69
Total airframe hrs:50205 hours
Engine model:P&W JT8D-17A
Fatalities:Fatalities: 0 / Occupants: 116
Aircraft damage: Minor
Category:Serious incident
Location:Chicago, IL -   United States of America
Phase: Approach
Nature:Unknown
Departure airport:Sacramento, CA (SMF
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE ACFT EXPERIENCED A LEFT WALKING BEAM FAILURE WHEN THE LANDING GEAR WAS EXTENDED DURING APPROACH, THE ACFT LOG WAS NOTED 'DURING GEAR EXTENSION AT 230 KTS TREMENDOUS BANG OCCURRED WHICH DROPPED PANELS AT ROWS 15-7 02 MASKS AT ROW 18. THREE GREEN NORMAL GEAR INDICATION. ON TAXI IN---NO ABNORMALITIES NOTED.' THE FAILED WALKING BEAM WAS MADE OF ALUMINUM. THREE IS AN AD FOR THIS PART CALLING FOR ULTRASONIC INSPECTION EVERY 1500 HOURS. DURING AN INSPECTION A MECHANIC MISTOOKTHE BEAM FOR A STEEL ONE AND THE INSPECTION WAS NOT COMPLIED WITH AT THE PROPER TIME. AAL HAS TAKEN CORRECTIVE ACTION AND AT LAST COUNT ALL ALUMINUM BEAMS HAD BEEN REPLACED.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: CHI83IA418
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB CHI83IA418

History of this aircraft

Other occurrences involving this aircraft
27 May 1985 N1984 American Airlines 0 Chicago-O'Hare International Airport, IL (ORD/KORD) min

Revision history:

Date/timeContributorUpdates
01-Apr-2024 21:53 ASN Update Bot Added

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