Opspec C054, how many airlines use it?
- Thread starter Mattio
- Start date
Polar742
All the responsibility none of the authority
The OpSpecs are built as a system. In this case, you have all of this calculated prior to dispatch. Also, jets have to be able to stop within 60% of the available runway at the destination and alternate to dispatch.
In the 3 types of jets I have flown, only if you have a certain abnormal (usually Hydraulic failures resulting in loss of brakes) can you not stop on a runway you're dispatched too.
Polar742
All the responsibility none of the authority
The runway would meet the criteria before you even left your departure airport, even if that airport was forecast for clear and a million. AFAIK
BobDDuck
Island Bus Driver
I don't think so. If the TAF/METAR are calling it to be above the 3/4sm/4000RVR you are good to go even if the runway doesn't meet the the 115% requirement. At least that's how things happen around here. The one summer we did some LGA-ACK flying it caused a few diverts to PVD or BOS.
F9DXER
Well-Known Member
Not all jet operators have C054
operational on that runway.
And just as an FYI - that 15% requirement is the same for wet runways.
Sec. 121.195
Airplanes: Turbine engine powered: Landing limitations: Destination airports.
(a) No person operating a turbine engine powered transport category airplane may take off that airplane at such a weight that (allowing for normal consumption of fuel and oil in flight to the destination or alternate airport) the weight of the airplane on arrival would exceed the landing weight set forth in the Airplane Flight Manual for the elevation of the destination or alternate airport and the ambient temperature anticipated at the time of landing.
(b) Except as provided in paragraph (c), (d), or (e) of this section, no person operating a turbine engine powered transport category airplane may take off that airplane unless its weight on arrival, allowing for normal consumption of fuel and oil in flight (in accordance with the landing distance set forth in the Airplane Flight Manual for the elevation of the destination airport and the wind conditions anticipated there at the time of landing), would allow a full stop landing at the intended destination airport within 60 percent of the effective length of each runway described below from a point 50 feet above the intersection of the obstruction clearance plane and the runway. For the purpose of determining the allowable landing weight at the destination airport the following is assumed:
(1) The airplane is landed on the most favorable runway and in the most favorable direction, in still air.
(2) The airplane is landed on the most suitable runway considering the probable wind velocity and direction and the ground handling characteristics of the airplane, and considering other conditions such as landing aids and terrain.
(c) A turbopropeller powered airplane that would be prohibited from being taken off because it could not meet the requirements of paragraph (b)(2) of this section, may be taken off if an alternate airport is specified that meets all the requirements of this section except that the airplane can accomplish a full stop landing within 70 percent of the effective length of the runway.
(d) Unless, based on a showing of actual operating landing techniques on wet runways, a shorter landing distance (but never less than that required by paragraph (b) of this section) has been approved for a specific type and model airplane and included in the Airplane Flight Manual, no person may takeoff a turbojet powered airplane when the appropriate weather reports and forecasts, or a combination thereof, indicate that the runways at the destination airport may be wet or slippery at the estimated time of arrival unless the effective runway length at the destination airport is at least 115 percent of the runway length required under paragraph (b) of this section.
(e) A turbojet powered airplane that would be prohibited from being taken off because it could not meet the requirements of paragraph (b)(2) of this section may be taken off if an alternate airport is specified that meets all the requirements of paragraph (b) of this section.
From the way I remember - for wet that 60% now becomes 115% but the actual runway distance doesn't change - thus the aircraft weight is reduced to meet that requirement
C054. Special Limitations and Provisions for Instrument HQ
Approach Procedures and IFR Landing Minimums
Approach Procedures and IFR Landing Minimums
a. High Minimum Pilot-in-Command Provisions. Pilots-in-command who have not met the
requirements of Title 14 of the Code of Federal Regulations (CFR) Section 121.652 or 135.225(e) as
appropriate, shall use the high minimum pilot RVR landing minimum equivalents as determined from the
following table.
[FONT=TimesNewRomanPSMT,Bold][FONT=TimesNewRomanPSMT,Bold]requirements of Title 14 of the Code of Federal Regulations (CFR) Section 121.652 or 135.225(e) as
appropriate, shall use the high minimum pilot RVR landing minimum equivalents as determined from the
following table.
RVR Landing Minimum RVR Landing Minimum Equivalent required
as Published for High Minimum Pilots
[/FONT][/FONT]as Published for High Minimum Pilots
RVR 1800 RVR 4500
RVR 2000 RVR 4500
RVR 2400 RVR 5000
RVR 3000 RVR 5000
RVR 4000 RVR 6000
RVR 5000 RVR 6000
b. Limitations on the Use of Landing Minimums for Turbojet Airplanes.
(1) A pilot-in-command of a turbojet airplane shall not conduct an instrument approach
procedure when visibility conditions are reported to be less than 3⁄4 statute mile or RVR 4000 until that
pilot has been specifically qualified to use the lower landing minimums.
(2) A pilot-in-command of a turbojet airplane shall not begin an instrument approach procedure
when the visibility conditions are reported to be less than 3⁄4 statute mile or RVR 4000, unless the following
conditions exist:
(a) Fifteen percent additional runway length is available over the landing field length
specified for the destination airport by the appropriate Sections of the CFR.
(b) Precision instrument (all weather) runway markings or runway centerline lights areRVR 2000 RVR 4500
RVR 2400 RVR 5000
RVR 3000 RVR 5000
RVR 4000 RVR 6000
RVR 5000 RVR 6000
b. Limitations on the Use of Landing Minimums for Turbojet Airplanes.
(1) A pilot-in-command of a turbojet airplane shall not conduct an instrument approach
procedure when visibility conditions are reported to be less than 3⁄4 statute mile or RVR 4000 until that
pilot has been specifically qualified to use the lower landing minimums.
(2) A pilot-in-command of a turbojet airplane shall not begin an instrument approach procedure
when the visibility conditions are reported to be less than 3⁄4 statute mile or RVR 4000, unless the following
conditions exist:
(a) Fifteen percent additional runway length is available over the landing field length
specified for the destination airport by the appropriate Sections of the CFR.
operational on that runway.
And just as an FYI - that 15% requirement is the same for wet runways.
Sec. 121.195
Airplanes: Turbine engine powered: Landing limitations: Destination airports.
(a) No person operating a turbine engine powered transport category airplane may take off that airplane at such a weight that (allowing for normal consumption of fuel and oil in flight to the destination or alternate airport) the weight of the airplane on arrival would exceed the landing weight set forth in the Airplane Flight Manual for the elevation of the destination or alternate airport and the ambient temperature anticipated at the time of landing.
(b) Except as provided in paragraph (c), (d), or (e) of this section, no person operating a turbine engine powered transport category airplane may take off that airplane unless its weight on arrival, allowing for normal consumption of fuel and oil in flight (in accordance with the landing distance set forth in the Airplane Flight Manual for the elevation of the destination airport and the wind conditions anticipated there at the time of landing), would allow a full stop landing at the intended destination airport within 60 percent of the effective length of each runway described below from a point 50 feet above the intersection of the obstruction clearance plane and the runway. For the purpose of determining the allowable landing weight at the destination airport the following is assumed:
(1) The airplane is landed on the most favorable runway and in the most favorable direction, in still air.
(2) The airplane is landed on the most suitable runway considering the probable wind velocity and direction and the ground handling characteristics of the airplane, and considering other conditions such as landing aids and terrain.
(c) A turbopropeller powered airplane that would be prohibited from being taken off because it could not meet the requirements of paragraph (b)(2) of this section, may be taken off if an alternate airport is specified that meets all the requirements of this section except that the airplane can accomplish a full stop landing within 70 percent of the effective length of the runway.
(d) Unless, based on a showing of actual operating landing techniques on wet runways, a shorter landing distance (but never less than that required by paragraph (b) of this section) has been approved for a specific type and model airplane and included in the Airplane Flight Manual, no person may takeoff a turbojet powered airplane when the appropriate weather reports and forecasts, or a combination thereof, indicate that the runways at the destination airport may be wet or slippery at the estimated time of arrival unless the effective runway length at the destination airport is at least 115 percent of the runway length required under paragraph (b) of this section.
(e) A turbojet powered airplane that would be prohibited from being taken off because it could not meet the requirements of paragraph (b)(2) of this section may be taken off if an alternate airport is specified that meets all the requirements of paragraph (b) of this section.
From the way I remember - for wet that 60% now becomes 115% but the actual runway distance doesn't change - thus the aircraft weight is reduced to meet that requirement