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B757 flight crew reported that the first officer's flight instruments started to malfunction and disagreed with the captain's side causing a return to their departure airport.
| Attributes | |
| ACN | 1576882 |
| Time | |
| Date | 201809 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Air Data Computer |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Total 8911 |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 339 Flight Crew Total 5101 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Aircraft was worked on for a multitude of maintenance issues. Systems were tested and deemed repaired. All previous issues that were worked on returned during climbout at approximately 1;500 feet. The following EICAS cautions appeared. Left engine eec; right engine eec; altitude disagree; IAS disagree; rudder ratio; mach/speed trim along with erroneous airspeed and altitude indications on the first officer's panel. Control was transferred to the captain as it was determined that his indications were correct. [ATC was advised]; all appropriate checklists completed; dispatch contacted; cabin crew and passengers briefed landing data obtained and FMC set up for a return to [departure airport]. The subsequent approach and landing to runway xxr was uneventful.
Original NASA ASRS Text
Title: B757 flight crew reported that the First Officer's flight instruments started to malfunction and disagreed with the Captain's side causing a return to their departure airport.
Narrative: Aircraft was worked on for a multitude of maintenance issues. Systems were tested and deemed repaired. All previous issues that were worked on returned during climbout at approximately 1;500 feet. The following EICAS cautions appeared. L ENG EEC; R ENG EEC; ALT DISAGREE; IAS DISAGREE; RUDDER RATIO; MACH/SPD TRIM along with erroneous airspeed and altitude indications on the First Officer's panel. Control was transferred to the Captain as it was determined that his indications were correct. [ATC was advised]; all appropriate checklists completed; Dispatch contacted; cabin crew and passengers briefed landing data obtained and FMC set up for a return to [departure airport]. The subsequent approach and landing to Runway XXR was uneventful.
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.