Captain IF Snailtrails
22nd Dec 1998, 14:33
A few weeks ago I had to divert to a field that was non-radar controlled.
We were told to track direct to the Initial Fix, which also had a published holding facility, for ILS approach.
Runway was 102*, heading to I.F. was 005 with track 001*. Tracking to I.F. was via FMC. Cleared for ILS approach upon LLZ intercept. No deviation left was permitted from inbound track to I.F. due traffic. There are no published STARs for this airport.
Tower controller gasped surprise as I entered a parallel entry overhead the IF before I intercepted the LLZ.
Question:
Some STARs specify near 90* cuts of the LLZ just before the IF. If there are no ADF needles to provide clues to intercept (e.g. the new Kuala Lumpur airport), then I must rely on the FMC LOC CAP ACTIVE function of LNAV to achieve a LLZ intercept without overshooting. If I relied on LLZ needle movement or F/D Capture mode alone, I'd shoot through it at normal B744 capture speeds.
However this is whilst under radar control. Outside radar coverage, as I understand the rules, full IFR procedures apply unless there is a published STAR for that runway indicating otherwise, that caters for a near 90* cut.
Any Controllers care to comment?
We were told to track direct to the Initial Fix, which also had a published holding facility, for ILS approach.
Runway was 102*, heading to I.F. was 005 with track 001*. Tracking to I.F. was via FMC. Cleared for ILS approach upon LLZ intercept. No deviation left was permitted from inbound track to I.F. due traffic. There are no published STARs for this airport.
Tower controller gasped surprise as I entered a parallel entry overhead the IF before I intercepted the LLZ.
Question:
Some STARs specify near 90* cuts of the LLZ just before the IF. If there are no ADF needles to provide clues to intercept (e.g. the new Kuala Lumpur airport), then I must rely on the FMC LOC CAP ACTIVE function of LNAV to achieve a LLZ intercept without overshooting. If I relied on LLZ needle movement or F/D Capture mode alone, I'd shoot through it at normal B744 capture speeds.
However this is whilst under radar control. Outside radar coverage, as I understand the rules, full IFR procedures apply unless there is a published STAR for that runway indicating otherwise, that caters for a near 90* cut.
Any Controllers care to comment?