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AIM

10/12/17

10−1−4

Helicopter IFR Operations

TBL 10−1−1

Helicopter Use of Standard Instrument Approach Procedures

Procedure

Helicopter Visibility

Minima

Helicopter MDA/DA

Maximum Speed Limitations

Conventional

(non−Copter)

The greater of: one half

the Category A visibility

minima, 

1

/

4

 statute mile

visibility, or 1200 RVR

As published for

Category A

The helicopter may initiate the final

approach segment at speeds up to

the upper limit of the highest

Approach Category authorized by

the procedure, but must be slowed

to no more than 90 KIAS at the

MAP in order to apply the visibility

reduction.

Copter Procedure

As published

As published

90 KIAS when on a published

route/track.

GPS Copter Procedure As published

As published

90 KIAS when on a published route

or track, EXCEPT 70 KIAS when

on the final approach or missed

approach segment and, if annotated,

in holding. Military procedures are

limited to 90 KIAS for all segments.

NOTE−

Several factors affect the ability of the pilot to acquire and

maintain the visual references specified in 14 CFR

Section 91.175(c), even in cases where the flight visibility

may be at the minimum derived by TBL 10−1−1. These

factors include, but are not limited to:

1. Cockpit cutoff angle (the angle at which the cockpit or

other airframe structure limits downward visibility below

the horizon).

2. Combinations of high MDA/DH and low visibility

minimum, such as a conventional nonprecision approach

with a reduced helicopter visibility minima (per 14 CFR

Section 97.3).

3. Type, configuration, and intensity of approach and

runway lighting systems.

4. Type of obscuring phenomenon and/or windshield

contamination.