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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Heading track position deviation. B747 flight crew deviation around thunderstorm activity in an overwater, foreign airspace operation. Spillout occurs into uncontrolled airspace.
| Attributes | |
| ACN | 317980 |
| Time | |
| Date | 199510 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dan |
| State Reference | FO |
| Altitude | msl bound lower : 37000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : vvts |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : pacific enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 19300 flight time type : 500 |
| ASRS Report | 317980 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 230 flight time total : 17000 flight time type : 5100 |
| ASRS Report | 317962 |
| Events | |
| Anomaly | airspace violation : exit inflight encounter : weather non adherence : clearance other anomaly other other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : returned to intended course or assigned course none taken : unable none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Thunderstorms made a deviation east necessary. ATC would only approve 25 mi east of course due to presence of uncontrolled airspace to east. We had to go 50 mi east of course, which put us in uncontrolled airspace. Communicating our intentions to ATC complicated by having to use HF radio with hong kong radio, not ATC. Supplemental information from acn 317962: large thunderstorms blocked our route of flight on A901. Difficulty in communicating with hong kong acc by HF radio. It was very difficult communicating with hong kong acc through hong kong radio. By the time we got the point across over the distance of our deviation we were beyond the 25 NM. Due to passenger on board this seemed the best course of action instead of injuries.
Original NASA ASRS Text
Title: HDG TRACK POS DEV. B747 FLC DEV AROUND TSTM ACTIVITY IN AN OVERWATER, FOREIGN AIRSPACE OP. SPILLOUT OCCURS INTO UNCTLED AIRSPACE.
Narrative: TSTMS MADE A DEV E NECESSARY. ATC WOULD ONLY APPROVE 25 MI E OF COURSE DUE TO PRESENCE OF UNCTLED AIRSPACE TO E. WE HAD TO GO 50 MI E OF COURSE, WHICH PUT US IN UNCTLED AIRSPACE. COMMUNICATING OUR INTENTIONS TO ATC COMPLICATED BY HAVING TO USE HF RADIO WITH HONG KONG RADIO, NOT ATC. SUPPLEMENTAL INFO FROM ACN 317962: LARGE TSTMS BLOCKED OUR RTE OF FLT ON A901. DIFFICULTY IN COMMUNICATING WITH HONG KONG ACC BY HF RADIO. IT WAS VERY DIFFICULT COMMUNICATING WITH HONG KONG ACC THROUGH HONG KONG RADIO. BY THE TIME WE GOT THE POINT ACROSS OVER THE DISTANCE OF OUR DEV WE WERE BEYOND THE 25 NM. DUE TO PAX ON BOARD THIS SEEMED THE BEST COURSE OF ACTION INSTEAD OF INJURIES.
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.