B747-100 abandons a coupled approach into hong kong with turbulence and wind gusts.

Attributes
ACN	450480
Time
Date	199909
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : vhhh.airport
State Reference	FO
Altitude	msl bound lower : 2000 msl bound upper : 2500
Environment
Flight Conditions	IMC
Weather Elements	Windshear Turbulence Thunderstorm
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : vhhk.artcc
Operator	common carrier : air carrier
Make Model Name	B747-100
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 25l other
Flight Phase	descent : approach landing : missed approach
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 14500 flight time type : 250
ASRS Report	450480
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3200 flight time type : 150
ASRS Report	450704
Events
Anomaly	inflight encounter : turbulence inflight encounter : wake turbulence inflight encounter : weather inflight encounter other other anomaly other anomaly other anomaly other
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued advisory controller : issued new clearance controller : provided flight assist flight crew : executed missed approach
Supplementary
Problem Areas	Weather Environmental Factor
Primary Problem	Weather

Narrative:

On a coupled approach to runway 25L in hong kong during tropical storm. My first time to this airport and after flying 8 hours from omfj. About 8-10 mi, we reported to approach that we were in moderate to severe turbulence (would have loved an option of discontinuing the approach). About 6-8 mi out, leaving 2500 ft, the autoplt was overctling, still severe turbulence, and for safety reasons I disconnected the autoplt and stopped the descent and notified approach that I wanted vectors out of there. I had terrain to my left and figured the severe WX was taking me in that direction. Reluctantly gave me a heading of 270 degrees. But that heading seemed not good enough, so I told them I was continuing to climb above the initial missed approach altitude of 2000 ft up to 3500 ft, then they cleared me to 4000 ft. No warning like GPWS or windshear by the aircraft. We were vectored out and then later tried another approach. Landed ok, but was informed by tower to phone them. I did, and they expressed they did not like me doing the published missed approach. I figured that my situation warranted different measures to keep a bad situation from getting worse.

Original NASA ASRS Text

Title: B747-100 ABANDONS A COUPLED APCH INTO HONG KONG WITH TURB AND WIND GUSTS.

Narrative: ON A COUPLED APCH TO RWY 25L IN HONG KONG DURING TROPICAL STORM. MY FIRST TIME TO THIS ARPT AND AFTER FLYING 8 HRS FROM OMFJ. ABOUT 8-10 MI, WE RPTED TO APCH THAT WE WERE IN MODERATE TO SEVERE TURB (WOULD HAVE LOVED AN OPTION OF DISCONTINUING THE APCH). ABOUT 6-8 MI OUT, LEAVING 2500 FT, THE AUTOPLT WAS OVERCTLING, STILL SEVERE TURB, AND FOR SAFETY REASONS I DISCONNECTED THE AUTOPLT AND STOPPED THE DSCNT AND NOTIFIED APCH THAT I WANTED VECTORS OUT OF THERE. I HAD TERRAIN TO MY L AND FIGURED THE SEVERE WX WAS TAKING ME IN THAT DIRECTION. RELUCTANTLY GAVE ME A HDG OF 270 DEGS. BUT THAT HDG SEEMED NOT GOOD ENOUGH, SO I TOLD THEM I WAS CONTINUING TO CLB ABOVE THE INITIAL MISSED APCH ALT OF 2000 FT UP TO 3500 FT, THEN THEY CLRED ME TO 4000 FT. NO WARNING LIKE GPWS OR WINDSHEAR BY THE ACFT. WE WERE VECTORED OUT AND THEN LATER TRIED ANOTHER APCH. LANDED OK, BUT WAS INFORMED BY TWR TO PHONE THEM. I DID, AND THEY EXPRESSED THEY DID NOT LIKE ME DOING THE PUBLISHED MISSED APCH. I FIGURED THAT MY SIT WARRANTED DIFFERENT MEASURES TO KEEP A BAD SIT FROM GETTING WORSE.

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.