 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A maintenance controller reports about one of their B737 aircraft not having the x-dimensions rechecked on all three main struts; within the 10-25 cycle requirements; after a full service was completed on the struts.
| Attributes | |
| ACN | 792520 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| ASRS Report | 792520 |
| Events | |
| Anomaly | maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft had a maintenance note on rechking the x-dimensions on all 3 main struts within 10-25 cycles after a full service. The limits are 10-25 cycles -- by the time they were checked it had 28 cycles. When it overflew; I was on my days off. The note was placed on the aircraft after I worked my shift. When I left work on day #1; the aircraft had 13 cycles. When I left work on day #2; the aircraft had 20 cycles. While I wasn't on duty when the aircraft overflew; I could have cleared it. The person that put the note on set up a due date for xx. That is where the mistake started. This safety report is for information for you guys. While I could have cleared it earlier; the norm is to let them fly for approximately 20 cycles before clearing them anyway so the gear will have all of the air out and will be completely settled.
Original NASA ASRS Text
Title: A MAINT CONTROLLER REPORTS ABOUT ONE OF THEIR B737 ACFT NOT HAVING THE X-DIMENSIONS RECHECKED ON ALL THREE MAIN STRUTS; WITHIN THE 10-25 CYCLE REQUIREMENTS; AFTER A FULL SERVICE WAS COMPLETED ON THE STRUTS.
Narrative: ACFT HAD A MAINT NOTE ON RECHKING THE X-DIMENSIONS ON ALL 3 MAIN STRUTS WITHIN 10-25 CYCLES AFTER A FULL SVC. THE LIMITS ARE 10-25 CYCLES -- BY THE TIME THEY WERE CHKED IT HAD 28 CYCLES. WHEN IT OVERFLEW; I WAS ON MY DAYS OFF. THE NOTE WAS PLACED ON THE ACFT AFTER I WORKED MY SHIFT. WHEN I LEFT WORK ON DAY #1; THE ACFT HAD 13 CYCLES. WHEN I LEFT WORK ON DAY #2; THE ACFT HAD 20 CYCLES. WHILE I WASN'T ON DUTY WHEN THE ACFT OVERFLEW; I COULD HAVE CLRED IT. THE PERSON THAT PUT THE NOTE ON SET UP A DUE DATE FOR XX. THAT IS WHERE THE MISTAKE STARTED. THIS SAFETY RPT IS FOR INFO FOR YOU GUYS. WHILE I COULD HAVE CLRED IT EARLIER; THE NORM IS TO LET THEM FLY FOR APPROX 20 CYCLES BEFORE CLRING THEM ANYWAY SO THE GEAR WILL HAVE ALL OF THE AIR OUT AND WILL BE COMPLETELY SETTLED.
Data retrieved from NASA's ASRS site as of May 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.