 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
DC10 flight crew discovers load calculation errors during approach; when an eight knot vref adjustment is required to stay above alpha floor.
| Attributes | |
| ACN | 878681 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 70 Flight Crew Total 15000 Flight Crew Type 650 |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Weight And Balance |
Narrative:
Burned approx. 1500lbs more fuel than flight plan. Needed to add 8kts above flap and vref speeds to stay above alpha. Cycled ats (auto throttle system) off than back on with no change noted. Suspected heavier than documented payload. Further investigation found that the load plan did not include weapons and carry-on. And based on the required speeds; the total baggage weight was brought into question as well. The flight plan was based on 55k payload. Load plan was 52k. Contacted the chief pilot and director of operations.
Original NASA ASRS Text
Title: DC10 flight crew discovers load calculation errors during approach; when an eight knot Vref adjustment is required to stay above Alpha Floor.
Narrative: Burned approx. 1500lbs more fuel than flight plan. Needed to add 8kts above flap and Vref speeds to stay above alpha. Cycled ATS (auto throttle system) off than back on with no change noted. Suspected heavier than documented payload. Further investigation found that the load plan did not include weapons and carry-on. And based on the required speeds; the total baggage weight was brought into question as well. The flight plan was based on 55k payload. Load plan was 52k. Contacted the chief pilot and director of operations.
Data retrieved from NASA's ASRS site as of April 2012 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.