AN ACR FLC GETS OFF COURSE DURING A DEP FROM TPE RWY 6 FRONT COURSE OUTBOUND ON THE ANPU ONE SID. FLC HAD PUT THE BACK COURSE HEADING IN THE HSI WINDOW. B747-200.

Date: 1996-11 · Aircraft: B747-100

Anomalies: deviation-track-heading-all-types|deviation-discrepancy-procedural-clearance|deviation-discrepancy-procedural-published-material-policy|deviation-discrepancy-procedural-far

Synopsis

AN ACR FLC GETS OFF COURSE DURING A DEP FROM TPE RWY 6 FRONT COURSE OUTBOUND ON THE ANPU ONE SID. FLC HAD PUT THE BACK COURSE HEADING IN THE HSI WINDOW. B747-200.

Narrative

AS I RECALL; WE WERE ASSIGNED THE ANPU ONE DEP FROM RWY 6 NEBOUND. THIS DEP REQUIRES THE CREW TO DEPART ON THE RWY 24 ICJN LOC COURSE (OUTBOUND ON THE FRONT COURSE) UNTIL 7 DME. THE CAPT WAS FLYING THIS LEG AND BRIEFED SETTING THE COURSE SELECTOR WINDOW TO 53 DEGS INSTEAD OF THE 233 DEGS REQUIRED FOR THE FRONT COURSE. I FAILED TO IDENT THE ERROR AND WE TOOK OFF WITH BOTH HSI'S IN THAT CONFIGN. THIS CONFIGN MAKES THE CDI NON-DIRECTIONAL. AFTER TKOF; THE CAPT TURNED R (TOWARD THE CDI) TO INTERCEPT THE LOC. HOWEVER; SINCE THE INCORRECTLY-SET CDI WAS NON-DIRECTIONAL; WE WERE; IN FACT; TURNING AWAY FROM THE COURSE AND TOWARD HIGH TERRAIN. WHEN WE DID NOT INTERCEPT THE COURSE AS EXPECTED; WE BOTH BECAME UNEASY AND I TUNED THE TIA VOR IN MY HSI TO VERIFY OUR LOCATION. WE IMMEDIATELY RECOGNIZED THE ERROR AND CORRECTED THE CAPT'S HSI FOR PROPER COURSE GUIDANCE WHILE EXPEDITING THE CLB. ABOUT THAT TIME THE DEP CTLR ASKED WHY WE WERE 'GOING THIS WAY.' AT NO TIME DID SHE GIVE ANY REAL ASSISTANCE SUCH AS VECTORS. HOWEVER; I ADMIT THAT THE NAVIGATION ERROR WAS OURS -- NOT HERS. AT NO TIME DID WE COME CLOSE ENOUGH TO TERRAIN TO ACTIVATE THE GPWS. WE ALSO CHKED THE RADAR FOR TERRAIN CLRNC. I HAVE LONG BEEN CONCERNED THAT COMMERCIAL CHARTS INDICATE THE COURSE TO BE FLOWN RATHER THAN THE LOC FRONT COURSE TO BE SET IN THE HSI. THIS CAN BE CONFUSING AND IS A SERIOUS TRAP WHICH IS BUILT INTO COMMERCIAL CHART LOC DEP DEPICTIONS - - AND IT CAUGHT US. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR ADMITS THAT HE AND THE CAPT MADE A SERIOUS ERROR DURING THEIR DEP BY PUTTING THE BACK COURSE HDG INTO THEIR INDICATOR WINDOWS. HE SAID THAT THE CHIEF PLT MADE THEM GO THROUGH A RETRAINING PROGRAM AND ALSO GAVE THEM 2 WKS OFF WITHOUT PAY. HOWEVER; THE RPTR THEN SAID THAT THIS DEP WAS STILL MISLEADING WHEN COMPARED TO THE HKG DEP OFF OF RWY 13. THE PROB WITH THE RPTR'S COMPARISON IS THAT THE HKG DEP IS A BACK COURSE DEP AS WHEREAS THE TPE DEP WAS A FRONT COURSE DEP.

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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.