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Caravan 208B pilot reported flaps inoperative after landing; caused by flap switch guards in the wrong position after maintenance to replace the O2 control cable.
| Attributes | |
| ACN | 1717291 |
| Time | |
| Date | 202001 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Caravan 208B |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Initial Approach |
| Component | |
| Aircraft Component | Flap Control (Trailing & Leading Edge) |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
O2 control on/off cable with the following reference C208 35-00-01 which is very vague nowhere in this MM states anything about these flap switch guards. Tested O2 system ops check good. Once again nowhere in the MM states anything about these guards for the flap switch system or testing the flap switches after removing the guards to access the O2 cable. When aircraft landed pilot reported flaps inoperative at zero. Notified maintenance control. Maintenance control asked me to verify flap switch guards and realized that they were in the wrong position causing the flap system to fault. Repositioned the flap switch guards to original position I/a/west tda 2750e002 ops check good. C208 MM needs to be updated; also need better maintenance bulletin procedures.
Original NASA ASRS Text
Title: Caravan 208B pilot reported flaps inoperative after landing; caused by flap switch guards in the wrong position after maintenance to replace the O2 control cable.
Narrative: O2 control on/off cable with the following reference C208 35-00-01 which is very vague nowhere in this MM states anything about these flap switch guards. Tested O2 system ops check good. Once again nowhere in the MM states anything about these guards for the flap switch system or testing the flap switches after removing the guards to access the O2 cable. When aircraft landed pilot reported flaps inoperative at zero. Notified Maintenance Control. Maintenance Control asked me to verify flap switch guards and realized that they were in the wrong position causing the flap system to fault. Repositioned the flap switch guards to original position I/A/W TDA 2750E002 ops check good. C208 MM needs to be updated; also need better maintenance bulletin procedures.
Data retrieved from NASA's ASRS site 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.