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G-iv captain experiences a 'left rev unlock' cas message during climb and the reverser was stowed via the emergency stow switch. Shortly afterwards; 'communication hydraulic fail' and 'sngl rudder limit' cas messages are observed and the flight diverts to a suitable airport.
| Attributes | |
| ACN | 1270390 |
| Time | |
| Date | 201506 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream IV / G350 / G450 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Vectors Visual Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Hydraulic Main System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 70 Flight Crew Total 10700 Flight Crew Type 900 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
During flight; a red 'left rev unlock' cas message was observed indicating the left reverser was unlocked. The reverser was stowed via the emergency stow and the check list was referenced. Shortly afterwards; an amber 'communication hydraulic fail' and sngl rudder limit' cas messages were observed. A check of the hydraulic system showed complete loss of both pressure and fluid of the combine hydraulic system. The appropriate check list was reviewed and complied with. Once the aircraft was configured and check lists reviewed; approach control vectored us for a visual approach. Landing was successful using approximately 7;000 ft of the 10;000 ft available. Once stopped; the gear was pinned. While there was an attempt to taxi; it was decided to be towed to the FBO.
Original NASA ASRS Text
Title: G-IV Captain experiences a 'L REV Unlock' CAS message during climb and the reverser was stowed via the emergency stow switch. Shortly afterwards; 'COM HYD FAIL' and 'SNGL RUDDER LIMIT' CAS messages are observed and the flight diverts to a suitable airport.
Narrative: During flight; a red 'L REV Unlock' CAS message was observed indicating the left reverser was unlocked. The reverser was stowed via the Emergency Stow and the check list was referenced. Shortly afterwards; an Amber 'COM HYD FAIL' and SNGL RUDDER LIMIT' CAS messages were observed. A check of the hydraulic system showed complete loss of both pressure and fluid of the Combine Hydraulic System. The appropriate check list was reviewed and complied with. Once the Aircraft was configured and check lists reviewed; approach control vectored us for a visual approach. Landing was successful using approximately 7;000 ft of the 10;000 ft available. Once stopped; the gear was pinned. While there was an attempt to taxi; it was decided to be towed to the FBO.
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.