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A DHC8-400 during a #2 engine change technicians had to use excessive force to remove the propeller. Found interface washer missing between engine shaft and propeller.
| Attributes | |
| ACN | 693785 |
| Time | |
| Date | 200603 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 693785 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : inspection performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
During the removal of the #2 propeller for #2 engine replacement; the propeller required excessive force to remove from engine flange. It was discovered after removal; that the interface washer from a previous propeller install was missing. Due to concerns requiring excessive force on removal; the propeller was tagged unsvcable and routed to the propulsion shop for inspection.
Original NASA ASRS Text
Title: A DHC8-400 DURING A #2 ENG CHANGE TECHNICIANS HAD TO USE EXCESSIVE FORCE TO REMOVE THE PROP. FOUND INTERFACE WASHER MISSING BTWN ENG SHAFT AND PROP.
Narrative: DURING THE REMOVAL OF THE #2 PROP FOR #2 ENG REPLACEMENT; THE PROP REQUIRED EXCESSIVE FORCE TO REMOVE FROM ENG FLANGE. IT WAS DISCOVERED AFTER REMOVAL; THAT THE INTERFACE WASHER FROM A PREVIOUS PROP INSTALL WAS MISSING. DUE TO CONCERNS REQUIRING EXCESSIVE FORCE ON REMOVAL; THE PROP WAS TAGGED UNSVCABLE AND ROUTED TO THE PROPULSION SHOP FOR INSPECTION.
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.