Flying below glideslope?

[Cutlass1287]

I thought I had read in the FARs that you are not allowed to descend below the glideslope while on approach to an airport. I also thought it pertained to VFR, but I cant find it in the FARs, and I know that a lot of airports dont have any sort of visual glideslope indication. Did I just fall asleep when I was reading the FARs and dream this?

 

[FracCapt]

The only place I recall seeing it is in regards to certain type of airspace. I did a search, and found it in 91.129(e).

(e) Minimum Altitudes. When operating to an airport in Class D airspace, each pilot of—

(1) A large or turbine-powered airplane shall, unless otherwise required by the applicable distance from cloud criteria, enter the traffic pattern at an altitude of at least 1,500 feet above the elevation of the airport and maintain at least 1,500 feet until further descent is required for a safe landing;

(2) A large or turbine-powered airplane approaching to land on a runway served by an instrument landing system (ILS), if the airplane is ILS equipped, shall fly that airplane at an altitude at or above the glide slope between the outer marker (or point of interception of glide slope, if compliance with the applicable distance from cloud criteria requires interception closer in) and the middle marker; and

(3) An airplane approaching to land on a runway served by a visual approach slope indicator shall maintain an altitude at or above the glide slope until a lower altitude is necessary for a safe landing.

Paragraphs (e)(2) and (e)(3) of this section do not prohibit normal bracketing maneuvers above or below the glide slope that are conducted for the purpose of remaining on the glide slope.

 

[Guitar Guy]

The only place I recall seeing it is in regards to certain type of airspace. I did a search, and found it in 91.129(e).

91.129 covers operations in Class D airspace. 91.130 (Class C operations) and 91.131 (Class B operations) require compliance with 91.129 except as noted therein, so the glideslope restrictions of 91.129 also apply to operations in Classes B and C.