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A CL65 air carrier flight crew notices a mechanical discrepancy on the leading edge of the trailing flap resulting in company maintenance grounding the aircraft.
| Attributes | |
| ACN | 457650 |
| Time | |
| Date | 199912 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : mynn.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 270 flight time total : 3200 flight time type : 1800 |
| ASRS Report | 457650 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician oversight : supervisor |
| Qualification | technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa other other : 2 |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
I am a first officer flying the canadair regional jet (carj). On dec/xa/99, I was conducting the preflight inspection (as per my operations manual and flight standards manual) when I noticed what appeared to be small chips in the teflon tape covering the cambered top portion of an outboard flap. Metal was visible through the chips. Following prescribed procedures for reporting mechanical discrepancies, the captain entered my discovery in the aircraft's maintenance logbook. Maintenance control dispatched a mechanic to our gate, and after he inspected the affected area, he removed the aircraft from service. It seems that the flap system in the carj is susceptible to serious wear conditions, which render the airplane unairworthy even though they appear to only be minor cosmetic damage.
Original NASA ASRS Text
Title: A CL65 ACR FLC NOTICES A MECHANICAL DISCREPANCY ON THE LEADING EDGE OF THE TRAILING FLAP RESULTING IN COMPANY MAINT GNDING THE ACFT.
Narrative: I AM A FO FLYING THE CANADAIR REGIONAL JET (CARJ). ON DEC/XA/99, I WAS CONDUCTING THE PREFLT INSPECTION (AS PER MY OPS MANUAL AND FLT STANDARDS MANUAL) WHEN I NOTICED WHAT APPEARED TO BE SMALL CHIPS IN THE TEFLON TAPE COVERING THE CAMBERED TOP PORTION OF AN OUTBOARD FLAP. METAL WAS VISIBLE THROUGH THE CHIPS. FOLLOWING PRESCRIBED PROCS FOR RPTING MECHANICAL DISCREPANCIES, THE CAPT ENTERED MY DISCOVERY IN THE ACFT'S MAINT LOGBOOK. MAINT CTL DISPATCHED A MECH TO OUR GATE, AND AFTER HE INSPECTED THE AFFECTED AREA, HE REMOVED THE ACFT FROM SVC. IT SEEMS THAT THE FLAP SYS IN THE CARJ IS SUSCEPTIBLE TO SERIOUS WEAR CONDITIONS, WHICH RENDER THE AIRPLANE UNAIRWORTHY EVEN THOUGH THEY APPEAR TO ONLY BE MINOR COSMETIC DAMAGE.
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.