Originally Posted by
captain152
If you aren't able to fly a published missed from an approach you wouldn't be legal to execute it.
Not true.
It's not uncommon to be cleared for an approach and to be given a missed approach procedure with the clearance that differs from published. An alternate missed might be for equipment, traffic, weather, routing, or other reasons.
"Waxahotchi Eight Six Niner is cleared the Danderdoodle two-three ILS, on the missed approach fly runway heading and maintain eight thousand. Upon reaching eight thousand, direct BABUU and hold as published."
Absolutely a procedure may be issued when components of that procedure are not operative. An ILS that has an inoperative glideslope component, for example, may be issued as an ILS approach clearance, even though the glideslope is not operative. Some procedures provide for alternate means of identification of a waypoint (eg, radar in lieu of a DME fix, or in lieu of DME, etc). Others do not.
Where a component of the procedure is not available, alternate compliance may be arranged and disseminated in advance by NOTAM.