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Boeing 757-200 first officer reported losing the left hydraulic system during approach.
| Attributes | |
| ACN | 1517311 |
| Time | |
| Date | 201802 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Hydraulic System Lines Connectors Fittings |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter Other / Unknown |
Narrative:
Upon being fully configured on ILS xxr 5 miles out at 1;500 feet we lost the left hydraulic system. We decided to go around to analyze systems lost before landing. The discontinued approach went smoothly as we climbed up to 3;000 feet and realized the gear and flaps would not come up; so [we] stayed at 140 knots fully configured. We ran the QRH checklist for left hydraulic system press. It guided us to land flaps 20. We attempted; per the checklist; to raise the flaps alternate system and this did not work. We landed flaps 30; but complied with the QRH checklist with the exception of flaps 30 speed. We discussed inoperative equipment and the possibility of more as the ptu (power transfer unit) was in question with the inability to raise the flaps. We [advised ATC] and returned for landing. Upon slowing and clearing the runway the captain determined that there was no nose wheel steering. We stopped and called for a tow-in and wrote up the hydraulic system and the ptu status upon arrival at the gate.a failed hydraulic line in the left main landing gear downlock actuator is what maintenance saw. These types of failures are unpreventable. There is no real cause assuming all maintenance checks and inspections are complied with.
Original NASA ASRS Text
Title: Boeing 757-200 First Officer reported losing the left hydraulic system during approach.
Narrative: Upon being fully configured on ILS XXR 5 miles out at 1;500 feet we lost the left hydraulic system. We decided to go around to analyze systems lost before landing. The discontinued approach went smoothly as we climbed up to 3;000 feet and realized the gear and flaps would not come up; so [we] stayed at 140 knots fully configured. We ran the QRH checklist for L HYD SYS PRESS. It guided us to land flaps 20. We attempted; per the checklist; to raise the flaps alternate system and this did not work. We landed flaps 30; but complied with the QRH checklist with the exception of flaps 30 speed. We discussed inoperative equipment and the possibility of more as the PTU (Power Transfer Unit) was in question with the inability to raise the flaps. We [advised ATC] and returned for landing. Upon slowing and clearing the runway the Captain determined that there was no nose wheel steering. We stopped and called for a tow-in and wrote up the hydraulic system and the PTU status upon arrival at the gate.A failed hydraulic line in the left main landing gear downlock actuator is what maintenance saw. These types of failures are unpreventable. There is no real cause assuming all maintenance checks and inspections are complied with.
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.