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A B737-300 was dispatched in non compliance with the improper total air temperature sensor replaced. Caused 'B' autoplt malfunction.
| Attributes | |
| ACN | 561220 |
| Time | |
| Date | 200209 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 561220 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 561219 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : b autoplt malfunction |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
While clearing an MEL for a no heat light on a total air temperature probe, I installed the wrong part number that was given to me by my lead (off part number and serial number was unreadable). Aircraft returned from ZZZ with 'B' autoplt problems which I deferred thinking it needed a digital air data computer (no parts). After aircraft departed, I rechked parts catalog and realized probe was wrong part. I notified maintenance control and correct part was installed at ZZZ1 (next leg) and 'B' autoplt was cleared. I thought the part number was checked and in the rush of clearing the MEL on a through flight, a lack of communication caused the error.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE IMPROPER TOTAL AIR TEMP SENSOR REPLACED. CAUSED 'B' AUTOPLT MALFUNCTION.
Narrative: WHILE CLRING AN MEL FOR A NO HEAT LIGHT ON A TOTAL AIR TEMP PROBE, I INSTALLED THE WRONG PART NUMBER THAT WAS GIVEN TO ME BY MY LEAD (OFF PART NUMBER AND SERIAL NUMBER WAS UNREADABLE). ACFT RETURNED FROM ZZZ WITH 'B' AUTOPLT PROBS WHICH I DEFERRED THINKING IT NEEDED A DIGITAL AIR DATA COMPUTER (NO PARTS). AFTER ACFT DEPARTED, I RECHKED PARTS CATALOG AND REALIZED PROBE WAS WRONG PART. I NOTIFIED MAINT CTL AND CORRECT PART WAS INSTALLED AT ZZZ1 (NEXT LEG) AND 'B' AUTOPLT WAS CLRED. I THOUGHT THE PART NUMBER WAS CHKED AND IN THE RUSH OF CLRING THE MEL ON A THROUGH FLT, A LACK OF COM CAUSED THE ERROR.
Data retrieved from NASA's ASRS site as of July 2007 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.