 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B757-200 lost navigation and compass ability on departure. The cockpit, floor, and panels were soaked with water.
| Attributes | |
| ACN | 586325 |
| Time | |
| Date | 200306 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : wsss.airport |
| State Reference | FO |
| Altitude | msl bound lower : 22 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : initial climbout : takeoff climbout : intermediate altitude |
| Route In Use | departure sid : n/s |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 13000 flight time type : 1300 |
| ASRS Report | 586325 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : flight engineer pilot : atp pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 28 flight time total : 3800 flight time type : 575 |
| ASRS Report | 586082 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies |
| Independent Detector | aircraft equipment other aircraft equipment : nav display other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : provided flight assist flight crew : diverted to another airport flight crew : landed as precaution none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Company Aircraft |
| Primary Problem | Company |
Narrative:
On takeoff from wsss, the left and right side top and bottom displays blanked, only a yellow 'att' on the top screens and a yellow 'heading' on the bottom screens were in view. ATC notified, and we requested a return to land. We were given altitudes and headings to return, ATC notified that we could only make compass turns. After block-in, we left the IRU's and displays powered for a maintenance check. Maintenance confirmed that they were 'erratic down,' the aircraft system were isolated, powered down one at a time, and then repowered. Aircraft returned to service, and the subsequent takeoff was normal. Note -- during the initial preparation for flight, there was excessive amounts of water in the cockpit. We mopped it up as best we could with paper towels. The floorboards were wet, all panels were wet, and there was water dripping down from all points on the overhead. Supplemental information from acn 586082: on takeoff from wsss, both map displays blanked with only 'att' and 'heading' displayed.
Original NASA ASRS Text
Title: B757-200 LOST NAV AND COMPASS ABILITY ON DEP. THE COCKPIT, FLOOR, AND PANELS WERE SOAKED WITH WATER.
Narrative: ON TKOF FROM WSSS, THE L AND R SIDE TOP AND BOTTOM DISPLAYS BLANKED, ONLY A YELLOW 'ATT' ON THE TOP SCREENS AND A YELLOW 'HDG' ON THE BOTTOM SCREENS WERE IN VIEW. ATC NOTIFIED, AND WE REQUESTED A RETURN TO LAND. WE WERE GIVEN ALTS AND HDGS TO RETURN, ATC NOTIFIED THAT WE COULD ONLY MAKE COMPASS TURNS. AFTER BLOCK-IN, WE LEFT THE IRU'S AND DISPLAYS POWERED FOR A MAINT CHK. MAINT CONFIRMED THAT THEY WERE 'ERRATIC DOWN,' THE ACFT SYS WERE ISOLATED, POWERED DOWN ONE AT A TIME, AND THEN REPOWERED. ACFT RETURNED TO SVC, AND THE SUBSEQUENT TKOF WAS NORMAL. NOTE -- DURING THE INITIAL PREPARATION FOR FLT, THERE WAS EXCESSIVE AMOUNTS OF WATER IN THE COCKPIT. WE MOPPED IT UP AS BEST WE COULD WITH PAPER TOWELS. THE FLOORBOARDS WERE WET, ALL PANELS WERE WET, AND THERE WAS WATER DRIPPING DOWN FROM ALL POINTS ON THE OVERHEAD. SUPPLEMENTAL INFO FROM ACN 586082: ON TKOF FROM WSSS, BOTH MAP DISPLAYS BLANKED WITH ONLY 'ATT' AND 'HDG' DISPLAYED.
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.