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While removing old tape and sealant with a scotchbrite disc and damp rag of acetone at the aft pit threshold plate on a B737-300; mechanic reports the rag caught on fire; setting off the deluge system and damaging two aircraft.
| Attributes | |
| ACN | 811608 |
| Time | |
| Date | 200809 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | other |
| Function | maintenance : technician |
| ASRS Report | 811608 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | other |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
While replacing aft pit threshold plate; was removing old tape and sealant with a scotchbrite disc and a damp rag of acetone. When putting grinder down; noticed a portion of rag on fire. Grabbed rag out of aircraft and threw to ground on top of floor grate and put out fire with a rag soaked with water. As soon as fire was out (approximately 15 seconds); heard sirens and the deluge system let go. Due to the events; 2 aircraft received water damage. Be more aware of my surroundings while grinding. System should give a person the opportunity to turn off deluge system in such an event the fire was already extinguished.
Original NASA ASRS Text
Title: WHILE REMOVING OLD TAPE AND SEALANT WITH A SCOTCHBRITE DISC AND DAMP RAG OF ACETONE AT THE AFT PIT THRESHOLD PLATE ON A B737-300; MECHANIC REPORTS THE RAG CAUGHT ON FIRE; SETTING OFF THE DELUGE SYSTEM AND DAMAGING TWO AIRCRAFT.
Narrative: WHILE REPLACING AFT PIT THRESHOLD PLATE; WAS REMOVING OLD TAPE AND SEALANT WITH A SCOTCHBRITE DISC AND A DAMP RAG OF ACETONE. WHEN PUTTING GRINDER DOWN; NOTICED A PORTION OF RAG ON FIRE. GRABBED RAG OUT OF ACFT AND THREW TO GND ON TOP OF FLOOR GRATE AND PUT OUT FIRE WITH A RAG SOAKED WITH WATER. AS SOON AS FIRE WAS OUT (APPROX 15 SECONDS); HEARD SIRENS AND THE DELUGE SYSTEM LET GO. DUE TO THE EVENTS; 2 ACFT RECEIVED WATER DAMAGE. BE MORE AWARE OF MY SURROUNDINGS WHILE GRINDING. SYSTEM SHOULD GIVE A PERSON THE OPPORTUNITY TO TURN OFF DELUGE SYSTEM IN SUCH AN EVENT THE FIRE WAS ALREADY EXTINGUISHED.
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.