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Autoflt failure leads crew to fly through the localizer slightly before recovery of system. Assisted by approach control vector.
| Attributes | |
| ACN | 445000 |
| Time | |
| Date | 199908 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : arnes |
| State Reference | CA |
| Altitude | msl single value : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | arrival star : pdz.3 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 0 flight time total : 4000 flight time type : 0 |
| ASRS Report | 444999 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 2100 |
| ASRS Report | 445000 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance other spatial deviation |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : provided flight assist flight crew : overcame equipment problem |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
At about XA00 on the PDZ3 starr approaching arnes intersection, the aircraft experienced several failures simultaneously, 1) both flight directors, 2) autoplt, 3) autothrottles, and 4) dual FMC failure. Both FMC's were reinstated in accordance with our operations manual FMS page 1. Shortly after we noticed a map shift with our raw back up. We corrected back on localizer course with a backup vector from socal. We continued the approach to non event landing. At no time did we experience full scale deflection. During completion of the parking checklist we noticed that the left IRU and center IRU were well out of tolerance. During a starr arrival if both FMC's failure, the arrival approach should be flown on raw data.
Original NASA ASRS Text
Title: AUTOFLT FAILURE LEADS CREW TO FLY THROUGH THE LOC SLIGHTLY BEFORE RECOVERY OF SYS. ASSISTED BY APCH CTL VECTOR.
Narrative: AT ABOUT XA00 ON THE PDZ3 STARR APCHING ARNES INTXN, THE ACFT EXPERIENCED SEVERAL FAILURES SIMULTANEOUSLY, 1) BOTH FLT DIRECTORS, 2) AUTOPLT, 3) AUTOTHROTTLES, AND 4) DUAL FMC FAILURE. BOTH FMC'S WERE REINSTATED IN ACCORDANCE WITH OUR OPS MANUAL FMS PAGE 1. SHORTLY AFTER WE NOTICED A MAP SHIFT WITH OUR RAW BACK UP. WE CORRECTED BACK ON LOC COURSE WITH A BACKUP VECTOR FROM SOCAL. WE CONTINUED THE APCH TO NON EVENT LNDG. AT NO TIME DID WE EXPERIENCE FULL SCALE DEFLECTION. DURING COMPLETION OF THE PARKING CHKLIST WE NOTICED THAT THE L IRU AND CTR IRU WERE WELL OUT OF TOLERANCE. DURING A STARR ARR IF BOTH FMC'S FAILURE, THE ARR APCH SHOULD BE FLOWN ON RAW DATA.
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.