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A supplemental carrier DC10 flight crew departed on a flight across the caribbean without the minimum required navigation equipment operating. The flight crew had forgotten to initialize the INS align check during the preflight, and chose not to delay the flight's departure.
| Attributes | |
| ACN | 333026 |
| Time | |
| Date | 199604 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pty |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 9000 flight time type : 2000 |
| ASRS Report | 333026 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 130 flight time total : 23000 flight time type : 130 |
| ASRS Report | 334176 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During preflight the INS (2 units) and omega were loaded with the waypoints to fargo, nd. Crew did not go to 'align' with the INS's so at start check the captain noticed that the INS's were not aligned and decided to position the INS selectors to altitude reference which shuts down the INS and said 'we're going with the omega only.' en route to far, approximately 160 mi out of panama city, panama, the omega became unreliable for navigation and captain used dead reckoning to navigation to gni. According to operations specifications the DC10 is required to use 2 INS's or 1 INS and 1 omega to fly across the caribbean and the captain did not want to wait in panama city, panama, for the INS to align and delay the departure.
Original NASA ASRS Text
Title: A SUPPLEMENTAL CARRIER DC10 FLC DEPARTED ON A FLT ACROSS THE CARIBBEAN WITHOUT THE MINIMUM REQUIRED NAV EQUIP OPERATING. THE FLC HAD FORGOTTEN TO INITIALIZE THE INS ALIGN CHK DURING THE PREFLT, AND CHOSE NOT TO DELAY THE FLT'S DEP.
Narrative: DURING PREFLT THE INS (2 UNITS) AND OMEGA WERE LOADED WITH THE WAYPOINTS TO FARGO, ND. CREW DID NOT GO TO 'ALIGN' WITH THE INS'S SO AT START CHK THE CAPT NOTICED THAT THE INS'S WERE NOT ALIGNED AND DECIDED TO POS THE INS SELECTORS TO ALT REF WHICH SHUTS DOWN THE INS AND SAID 'WE'RE GOING WITH THE OMEGA ONLY.' ENRTE TO FAR, APPROX 160 MI OUT OF PANAMA CITY, PANAMA, THE OMEGA BECAME UNRELIABLE FOR NAV AND CAPT USED DEAD RECKONING TO NAV TO GNI. ACCORDING TO OPS SPECS THE DC10 IS REQUIRED TO USE 2 INS'S OR 1 INS AND 1 OMEGA TO FLY ACROSS THE CARIBBEAN AND THE CAPT DID NOT WANT TO WAIT IN PANAMA CITY, PANAMA, FOR THE INS TO ALIGN AND DELAY THE DEP.
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.