Question

During the KBED ILS RWY 29 approach, using the local altimeter setting, what MDA applies if the glide slope becomes inoperative?

1) 920 feet if you can fix ROGGR
2) 720 feet
3) 620 feet even without the capability to fix ROGGR
4) 620 feet if you can fix ROGGR

Answer 1

If the glide slope becomes inoperative during a KBED ILS RWY 29 approach and you can fix ROGGR, the MDA is typically 920 feet. Always confirm the MDA by checking the current approach chart for the specific procedure.

Step-by-step explanation:

The question refers to a specific procedure for the KBED ILS RWY 29 approach, which is an instrument landing system (ILS) approach at Laurence G. Hanscom Field in Bedford, Massachusetts. When the glide slope of an ILS approach becomes inoperative, pilots must revert to the localizer minimums or to a non-precision approach procedure. If you can identify the fix ROGGR, a specific waypoint on the approach chart, the minimum descent altitude (MDA) is typically lower because you have a more precise position fix on your final approach segment.

If the glide slope is not available and you are able to fix ROGGR, then based on available approach plates (which can change and must be confirmed for current validity), the likely MDA answer is 920 feet. If unable to fix ROGGR or no mention of fixing ROGGR is made, a higher MDA, such as 720 feet or 620 feet, may apply. However, it's crucial to check the current approach chart for KBED ILS RWY 29 to find the correct MDA when the glide slope is inoperative.