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A B737-500 was assigned 2 separate checks to accomplish in a single visit. An A-1 check and a partial d-chk. Completed was the d-chk and an A-2 check in error.
| Attributes | |
| ACN | 702944 |
| Time | |
| Date | 200607 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | artcc : lggg.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| ASRS Report | 702944 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : coordinator |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Environmental Factor Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft was in structures for a 1/2 d-chk and during the check it was scheduled to have an A-1 check performed. Somehow an A-2 check was issued and complied with. I did the final audit on the card without noticing that it was an A-2; not an A-1. The mistake was discovered on jul/mon/06 at about XA00 when records went to update maintenance computer; routine overnight planning notified me of the error and I went to records to verify that it was indeed an A-2. I believe that 1 reason for this mistake was my not physically verifying the paperwork against the master work scope. I took it for granted that planning and production control would issue us the correct paperwork to accomplish our 1/2 d-chk.
Original NASA ASRS Text
Title: A B737-500 WAS ASSIGNED 2 SEPARATE CHKS TO ACCOMPLISH IN A SINGLE VISIT. AN A-1 CHK AND A PARTIAL D-CHK. COMPLETED WAS THE D-CHK AND AN A-2 CHK IN ERROR.
Narrative: ACFT WAS IN STRUCTURES FOR A 1/2 D-CHK AND DURING THE CHK IT WAS SCHEDULED TO HAVE AN A-1 CHK PERFORMED. SOMEHOW AN A-2 CHK WAS ISSUED AND COMPLIED WITH. I DID THE FINAL AUDIT ON THE CARD WITHOUT NOTICING THAT IT WAS AN A-2; NOT AN A-1. THE MISTAKE WAS DISCOVERED ON JUL/MON/06 AT ABOUT XA00 WHEN RECORDS WENT TO UPDATE MAINT COMPUTER; ROUTINE OVERNIGHT PLANNING NOTIFIED ME OF THE ERROR AND I WENT TO RECORDS TO VERIFY THAT IT WAS INDEED AN A-2. I BELIEVE THAT 1 REASON FOR THIS MISTAKE WAS MY NOT PHYSICALLY VERIFYING THE PAPERWORK AGAINST THE MASTER WORK SCOPE. I TOOK IT FOR GRANTED THAT PLANNING AND PRODUCTION CTL WOULD ISSUE US THE CORRECT PAPERWORK TO ACCOMPLISH OUR 1/2 D-CHK.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.