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(2) Before conducting CAT III operations the pilot-in-command must meet the requirements of
CCAR 121.669 or 135.235(d)(as applicable).
e. Operating Limitations. The certificate holder shall not begin the final approach segment of a CAT
III instrument approach procedure, unless the latest reported controlling RVR for the landing
runway is at or above the minimums authorized for the operation being conducted and all of the
following conditions are met:
(1) The special operational equipment listed in Table 1 is installed and operational.
(2) The following ground-based equipment must be operational:
(a) Localizer and glide slope
(b) Outer marker or final approach fix. A precision or surveillance radar fix, an NDB, VOR,
DME fix, its published waypoint, or a published minimum GSIA fix, may be used in lieu
of an outer marker.
(c) Touchdown zone lights
(d) Runway centerline lights
(e) High intensity runway lights
(f) ALSF-I, ALSF-II, or SSALR approach light system or foreign equivalent. Sequence
flashing lights, may be inoperative.
(3) All CAT III fail-operational landing system-equipped aircraft operations using any controlling
RVR below 175m (600ft) shall be conducted to airports, which meet ICAO criteria for CAT III
operations.
(4) The crosswind component on the landing runway is less than the airplane flight manual’s
crosswind limitations, or 15 knots, whichever is more restrictive.
(5) All CAT III approaches, once established on the final approach segment (after the final
approach fix), may continue the approach if the controlling RVR decreases below the
applicable authorized minima, as appropriate.
f. Missed Approach Requirements. Missed approach shall be initiated when any of the following
conditions exists:
(1) For CAT III approaches using a fail-passive landing system without a rollout control system, a
missed approach shall be initiated when any of the following conditions exist:
(a) At the DH, if the pilot has not identified the required visual references with the
touchdown zone or touchdown zone lights to verify that the aircraft will touch down in
the touchdown zone.
(b) No later than DH, if any controlling RVR is reported below the lowest authorized
minima.
CIVIL AVIATION
ADMINISTRATION
OF CHINA CCAR-121 / 135 OPERATIONS SPECIFICATIONS
CAAC DOCUMENT
APPROVAL NO
AC-121-001R1
(Company Name) C0023-4 Certificate No:
Effective Date: Y M D
(c) If, after passing the DH, visual reference is lost or a reduction in visual reference occurs
which prevents the pilot from continuing to verify that the aircraft will touch down in the
touchdown zone.
(d) When a failure in the fail-passive landing system occurs prior to touch down.
(e) If the pilot determines that touch down cannot be safely accomplished within the
touchdown zone.
(f) When any of the required elements of the ground system becomes inoperative before
arriving at the DH. However, CAT III approaches and landings may be continued even
though the sequence flashers and the approach lights became inoperative.
(g) The crosswind component at touch down is expected to be greater than 15 knots, or
greater than the airplane flight manual’s crosswind limitations, whichever is more
restrictive.
(2) For CAT III approaches using a fail-passive landing system with a fail-passive rollout control
system or a fail-operational landing system using either a fail-operational or a fail-passive
rollout control system, a missed approach shall be initiated at or before DH or AH when any of
the following conditions exist:
(a) A failure occurs in one of the redundant systems in the aircraft before reaching the AH.
(b) Any of the required elements of the ground system becomes inoperative. However,
CAT III approaches and landings may be continued even though the sequence flashers
and the approach lights became inoperative.
(c) The crosswind component at touchdown is expected to be greater than 15 knots, or
greater than the airplane flight manual’s crosswind limitations, whichever is more
restrictive.
(d) If the pilot determines that touch down cannot be safely accomplished within the
touchdown zone.
(e) For aircraft using a fail-passive landing system and fail-passive rollout control system:
(i) At the DH, if the pilot has not identified the required visual references to verify that
the aircraft will touch down in the touchdown zone of the runway of intended
landing.
(ii) If, after passing the DH, visual reference is lost or a reduction in visual reference
occurs which prevents the pilot from continuing to verify that the aircraft will touch
down in the touchdown zone.
(3) The preceding subparagraphs f(1) and (2) do not preclude continuation of a higher minimum
　
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