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A DHC8 on approach at 5000 ft declared an emergency due to indicated loss of #1 hydraulic system caused by an incorrect light cap installed.
| Attributes | |
| ACN | 452815 |
| Time | |
| Date | 199910 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sby.airport |
| State Reference | MD |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 270 flight time total : 6400 flight time type : 3000 |
| ASRS Report | 452815 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : fault isolation performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Loss of #1 hydraulic system, declare an emergency. Did the emergency checklist due to the failure of maintenance department placing a caution light in place of #1 hydraulic isolation valve caution light. We completed the flapless landing checklist in place of the #1 hydraulic isolation valve checklist. When we arrived at the gate we figured out the problem, the maintenance department. No injuries resulted from this incident.
Original NASA ASRS Text
Title: A DHC8 ON APCH AT 5000 FT DECLARED AN EMER DUE TO INDICATED LOSS OF #1 HYD SYS CAUSED BY AN INCORRECT LIGHT CAP INSTALLED.
Narrative: LOSS OF #1 HYD SYS, DECLARE AN EMER. DID THE EMER CHKLIST DUE TO THE FAILURE OF MAINT DEPT PLACING A CAUTION LIGHT IN PLACE OF #1 HYD ISOLATION VALVE CAUTION LIGHT. WE COMPLETED THE FLAPLESS LNDG CHKLIST IN PLACE OF THE #1 HYD ISOLATION VALVE CHKLIST. WHEN WE ARRIVED AT THE GATE WE FIGURED OUT THE PROB, THE MAINT DEPT. NO INJURIES RESULTED FROM THIS INCIDENT.
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.