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A DC8 incurred a flight delay while accomplishing MEL special procedures for the radio rack cooling fan deferred inoperative.
| Attributes | |
| ACN | 679972 |
| Time | |
| Date | 200511 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-8 63 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 1 maintenance technician : 16 |
| ASRS Report | 679972 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 19 |
| ASRS Report | 679971 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : company policies |
| Independent Detector | other other : 2 |
| Resolutory Action | other |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : repair performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Environmental Factor Company Aircraft |
| Primary Problem | Aircraft |
Narrative:
On nov/sun/05 while technician Y was changing the crew oxygen bottle (for time); he noticed the radio rack fan was intermittent. Then technician Y notified me. I told technician Y to start the deferred item on the fan. Technician Y was on the line truck doing the paperwork. I grabbed the circuit breaker collars and ran back to the cockpit to pull and collar breakers. I came down off the aircraft X and told technician Y I pulled and collared circuit breakers. I pulled and collared the 3 phase circuit breaker for the radio rack fan. I should have collared the radio rack cooling valve circuit breaker instead.
Original NASA ASRS Text
Title: A DC8 INCURRED A FLT DELAY WHILE ACCOMPLISHING MEL SPECIAL PROCS FOR THE RADIO RACK COOLING FAN DEFERRED INOP.
Narrative: ON NOV/SUN/05 WHILE TECHNICIAN Y WAS CHANGING THE CREW OXYGEN BOTTLE (FOR TIME); HE NOTICED THE RADIO RACK FAN WAS INTERMITTENT. THEN TECHNICIAN Y NOTIFIED ME. I TOLD TECHNICIAN Y TO START THE DEFERRED ITEM ON THE FAN. TECHNICIAN Y WAS ON THE LINE TRUCK DOING THE PAPERWORK. I GRABBED THE CIRCUIT BREAKER COLLARS AND RAN BACK TO THE COCKPIT TO PULL AND COLLAR BREAKERS. I CAME DOWN OFF THE ACFT X AND TOLD TECHNICIAN Y I PULLED AND COLLARED CIRCUIT BREAKERS. I PULLED AND COLLARED THE 3 PHASE CIRCUIT BREAKER FOR THE RADIO RACK FAN. I SHOULD HAVE COLLARED THE RADIO RACK COOLING VALVE CIRCUIT BREAKER INSTEAD.
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.