If you can call ATC and explain that you are turning early because of a navigation/timing fault, you will be allright. they were not expecting you to do it), but it will not get you into a mountain side. It might get you in trouble with ATC (ie. If the missed approach only specifies ‘Climb 1000’ then climbing left turn to.’ then the airspace is protected even for early turns (between IAF and MAPt) and you can start turning as soon as reaching 1000’. The first is just procedural, the second ensures you will not hit a mountain. There is a nuance difference between AIM’s “you are not supposed to turn” and the ICAO’s “if the turn area is not protected there must be a warning label”. When it is not possible, a note is published on the profile view of the approach chart to specify that turns must not commence before the MAPt (or before an equivalent point in the case of a precision approach). In the case of a missed approach with a turn at an altitude/height, when an operational need exists, an additional protection is provided for the safeguarding of early turns. ICAO Doc 8161 Vol 1 - Aircraft Operations I-4-6-1 Well, I’m not an FAA guy so I can’t find the relevant FAR quote, but going more general: What if the aircraft has a DME? Is the pilot allowed to identify the MAP by distance rather than by time? The aircraft does not have other equipment that would positively identify the MAP, when is that pilot required to begin that turn? But when to start the left climbing turn to 5000'? The pilot immediately starts climbing to 1000'.
The MAP can no longer be identified by time. One can only assume that is meant to prevent a climbing turn into a nearby protected airspace.Ī pilot executes a LOC approach with a missed approach consisting of "Climb to 1000' then left climbing turn to 5000' direct to." Sometime after the FAF the cockpit timer breaks.
Hence if a pilot decides on a missed approach, he needs to wait until over the MAP to execute any turns on that procedure. Specified on the approach plate to the MAP at or above the MDA or DH When an early missed approach is executed fly the IAP as
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