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An EMB145 after takeoff past 135 KTS at about 500 ft had EICAS warning rudder #1 and #2 system fail. Manual reversion operation ok. Returned to field and landed overweight. No emergency declared.
| Attributes | |
| ACN | 657496 |
| Time | |
| Date | 200505 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 500 |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 657496 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 657497 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas rudder system fail other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
After takeoff; past 135 KTS around 500 ft; alert system cautioned rudder 1-2 degrees system fail. I was flying and captain completed aom procedures. Rudder ctlable due to manual reversion. Captain contacted maintenance control and operations and elected to return to ZZZ. Overweight landing followed (around 44000 pounds).vertical speed at touchdown almost nil. Airplane flew fine. ATC put us right on downwind. I don't remember exactly but I believe failure occurred right after yaw damper selected on. It then also failed and flight returned without yaw damper or autoplt; of course. No emergency was declared. Callback conversation with reporter revealed the following information: the reporter was the PF when the rudder system #1 and #2 failed. The rudder control went to manual reversion and operated ok. The reporter did not know if a computer other than the yaw damper was in the rudder control loop. Reporter stated that the airplane did not have any loss of hydraulic pressure or quantity and all other hydraulic pwred controls operated normally.
Original NASA ASRS Text
Title: AN EMB145 AFTER TKOF PAST 135 KTS AT ABOUT 500 FT HAD EICAS WARNING RUDDER #1 AND #2 SYS FAIL. MANUAL REVERSION OP OK. RETURNED TO FIELD AND LANDED OVERWT. NO EMER DECLARED.
Narrative: AFTER TKOF; PAST 135 KTS AROUND 500 FT; ALERT SYS CAUTIONED RUDDER 1-2 DEGS SYS FAIL. I WAS FLYING AND CAPT COMPLETED AOM PROCS. RUDDER CTLABLE DUE TO MANUAL REVERSION. CAPT CONTACTED MAINT CTL AND OPS AND ELECTED TO RETURN TO ZZZ. OVERWT LNDG FOLLOWED (AROUND 44000 LBS).VERT SPD AT TOUCHDOWN ALMOST NIL. AIRPLANE FLEW FINE. ATC PUT US RIGHT ON DOWNWIND. I DON'T REMEMBER EXACTLY BUT I BELIEVE FAILURE OCCURRED RIGHT AFTER YAW DAMPER SELECTED ON. IT THEN ALSO FAILED AND FLT RETURNED WITHOUT YAW DAMPER OR AUTOPLT; OF COURSE. NO EMER WAS DECLARED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS THE PF WHEN THE RUDDER SYS #1 AND #2 FAILED. THE RUDDER CTL WENT TO MANUAL REVERSION AND OPERATED OK. THE RPTR DID NOT KNOW IF A COMPUTER OTHER THAN THE YAW DAMPER WAS IN THE RUDDER CTL LOOP. RPTR STATED THAT THE AIRPLANE DID NOT HAVE ANY LOSS OF HYD PRESSURE OR QUANTITY AND ALL OTHER HYD PWRED CTLS OPERATED NORMALLY.
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.