AFI 11-2C-130v3 - BITS

AFI11-2C-130V3 23 APRIL 2012 89
6.20.1. File two alternates when:
6.20.1.1. The forecast visibility (intermittent or prevailing) is less than published for the
available DOD or National Aeronautical Charting Office (NACO) precision approach;
6.20.1.2. The forecast ceiling OR visibility (intermittent or prevailing) is less than
published for all other approaches. For approaches with no published ceiling requirement
(for example Jeppesen approaches), the minimum required ceiling shall be computed by
taking the published HAA or HATh and rounding it up to the nearest one hundred feet (or
as determined by MAJCOM TERPs review). For example, a Jeppesen VOR approach
with a published HAA of 642 feet would require a forecasted ceiling of 700 feet;
6.20.1.3. The forecast surface winds (intermittent or prevailing) exceed limits corrected
for RCR.
6.20.2. File an alternate, regardless of forecast weather, when the departure or destination
aerodrome is outside the CONUS. EXCEPTION: OCONUS, intra-theater flights that do not
exceed 3-hours, comply with basic AFI 11-202V3.
6.20.3. A remote or island destination is defined as any aerodrome, which due to its unique
geographic location, offers no suitable alternate (civil or military) within 2 hours flying time.
The forecast weather at the remote or island destination must meet the following criteria:
6.20.3.1. The prevailing surface winds, corrected for RCR, must be within limits at ETA
and forecast to remain so for 2 hours thereafter, and
6.20.3.2. The prevailing ceiling and visibility must be equal to or greater than published
minimums for an available non-precision approach, for ETA plus 2 hours. However, if a
precision approach is available, the ceiling or visibility may be intermittently below nonprecision
approach minimums (excluding ASR), but not below precision approach
minimums (for ETA plus 2 hours). NOTE: See Chapter 14 for fuel planning
considerations to a remote or island destination.
6.21. Adverse Weather.
6.21.1. Turbulence. Flight into areas of forecast or reported severe turbulence is prohibited.
6.21.1.1. Do not fly into an area of known or forecast moderate or greater mountain
wave turbulence. Refer to AFI 11-203, Weather for Aircrews, for additional information
on mountain wave turbulence.
6.21.1.2. The C-130 is a category II aircraft for turbulence. AF produced turbulence
products are based upon category II aircraft. If referencing other products or reports,
crews should confirm the type of aircraft the forecast turbulence applies to, or what type
of aircraft reported the encounter, to gain a more accurate picture for their route of flight.
Turbulence category charts are found in Air Force Weather Agency technical note
AFWA/TN 98/002, Meteorological Techniques.
6.21.1.3. The PIC is responsible for ensuring all passengers are seated, with seat belts
fastened, when areas of moderate or greater turbulence are encountered or anticipated.
WARNING: Serious injury may occur if passengers do not have their seat belts fastened
and the aircraft encounters moderate or severe turbulence.