AV19: RSC & CRFI - DC Flashcards
Define NOTAMJ
A special series NOTAM notifying the presence of hazardous conditions due to contaminants such as snow, ice, slush, on the manoeuvring area
Define Aircraft Movement Surface Condition Report (AMSCR)
The report that details the surface conditions for all aircraft movement areas including runways, taxiways and aprons
Define Canadian Runway Friction Index (CRFI)
The average of the runway friction as measured by a mechanical or electronic decelerometer and reported though the Aircraft Movement Surface Condition Report (AMSCR)
Can more than one NOTAMJ be in effect at a time for a given aerodrome?
NO
What is an RSC?
Runway Surface Condition,
Provides information describing runway condition
A NOTAMJ may be issued without a CRFI, however a CFRI cannot be issued without a _____
RSC
Who is responsible for providing the RSC and quantitative braking action information to NavCanada?
The Aerodrome Authority (Airport Operator)
If RSC/CRFI reports are communicated only verbally to NavCanada, what must be in place?
A formal agreement between NavCanada and the Aerodrome Authority
Who is responsible for cancelling the NOTAMJ?
Aerodrome Authority / Airport Operator
Unlike regular NOTAM, NOTAMJ are automatically distributed to the predetermined recipients, without revision and editing at the NOF. Therefore, Flight Service Specialists shall __________________________
be vigilant in making sure the proper format, abbreviations, and terminology is used.
Stopping distance increases ___ % on wet runways
15
Stopping distance increases ___ % on snow
50
Stopping distance increases ___ % on water deeper than 3mm
75
Stopping distance increases ___ % on ice
100
Take off distance increases by ___ % with 1.5cm of dry snow, or 0.8cm of slush on the runway
10
CRFI: Brakes are applied on the test vehicle at ______ intervals along the runway within _____ from each side of the centerline. The readings are averaged and reported as the CRFI number.
300m(1000ft) ,
10m(30ft)
How is the coefficient of friction affected by speed when the runway is packed snow or ice at a fixed temperature?
the CoF remains relatively constant with speed
Hydroplaning occurs as a function of: (3 things)
Water Depth,
Tire Pressure,
Speed
A non-rotating wheel will begin to hydroplane at a (lower/higher) speed than a rotating tire. (Select one and explain WHY)
LOWER
Water builds up under non-rotating wheel, increasing the hydroplaning effect.
What is hydroplaning?
Tires are separated from the runway by a thin layer of water, resulting in no braking or directional control abilities
In a hydroplane, the stopping distance may increase by as much as _____%
700%
An RSC Report must be provided when: (7 things)
- frost/snow/slush/ice on a runway,
- snow banks / drifts / windrows on or adjacent to runway,
- sand / ice control chem applied to or removed from a runway,
- cleared runway width falls below published,
- runway lights are partially/fully obscured,
- significant change to RSC including return to bare and dry,
- as per required minimum inspection frequency
What types of changes would be considered “significant change to RSC”? (7 things)
- coefficient of friction changes by 0.05 or more,
- depth of deposit changes greater than 20mm for dry snow, 10mm for wet snow, 3mm for slush,
- cleared width of rwy changes by 10% or more,
- type of deposit of extent of coverage changes, including return to bare and dry conditions,
- snow banks on one or both sides of runway height or distance from centerline changes,
- visibility of any runway lighting changes,
- any other conditions determined as significant by the aerodrome authority.
CRFI is to be reported whenever: (6 things)
- Ice / Frost on runway,
- Wet Ice on runway,
- Slush over ice on runway,
- ice control chem / sand on runway,
- compacted snow on runway,
- dry snow less than 2.5cm on runway
What is the maximum validity period of a NOTAMJ?
24 hours
What phrase should be included in a NOTAMJ if the RSCs are changing too rapidly for proper reporting or measurement?
RWY COND CHANGING RAPIDLY
When can the phrase “ALL RWYS” be used in a NOTAMJ
NEVER
What is the NOTAMJ header format?
000000 NOTAMJ ,
Example: 000000 NOTAMJ CYTS TIMMINS/VICTOR M.POWER
How should the RSC and friction header each be written?
RSC and CRFI ,
CYMR RSC 09/27 ,
CYMR CRFI 09/27
What is the order of the NOTAMJ, with or without a CRFI?
- NOTAMJ Header,
- RSC Header,
- Surface Conditions: ,
- Cleared Width (if applic),
- Offset (if applic),
- Conditions for cleared width (if applic),
- Conditions for remaining width (if applic),
- Runway clearing comments (optional),
- Windrows or other conditions (if applic),
- Treatments (if applic),
- Runway snow banks (if applic),
- Runway light coverage (if applic),
- RSC Obs time, - Friction Header,
- Friction Data,
- TWY and APN data (optional),
- Next planned observation (optional),
What is the abbreviation for percent?
PCT
What percentages are allowed for conditions of the runway? (Example XX PCT BARE AND DRY)
only every 5, up to and including 100
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
If the depth of a deposit is measurable, what unit shall be used?
inches and feet
If the depth of the deposit is unmeasurable, what shall be coded for amount?
TRACE
If the measured depth of a deposit is 2 inches or more how is it coded?
in whole values only (no decimals)
If the measured depth of a deposit less than 2 inches how is it coded?
Decimal values accepted are 0.13, 0.25, 0.5, 0.75, 1.5
Whole number ok: 1
What deposits require a depth reported for a NOTAMJ? (10 things)
DRY SN, DRY SN OVR COMPACT SN, DRY SN OVR ICE, SLUSH, SLUSH OVR ICE, SN DRIFTS, STANDING WATER, STANDING WATER OVR ICE, WET SN, WET SN OVR ICE
What is the maximum number of deposits that can be reported in a RSC?
3.
Example: 30 PCT BARE AND DRY. 30 PCT COMPACT SN 1 INS. 40 PCT DRY SN
What symbol / punctuation is used to separate deposits in RSCs?
period (.) NOT COMMA
How would a runway that is cleared 80 feet south of centerline to 40 feet north of centerline be coded for runway 09/27 at CYMR?
CYMR RSC 09/27 FM 40 FT NORTH OF CL TO 80 FT SOUTH OF CL……..
What are the terms used to describe treatments for each runway in the NOTAMJ, and how many can be used for each runway simultaneously?
SAND, UREA, CHEM, GRADED, PACKED
2 max
What details need to be included when describing Snow Banks?
Height (feet and inches),
Distance from outside runway edge (feet and inches)
Note: SN Banks present on the rwy shall be reported as windrows.
If snow banks are different heights, which height is used?
the tallest height
If snow banks are different distances from the runway edge, what distance is used
smallest distance from edge
If runway lights are covered or partially covered, how is it reported?
Reported for each runway, indicating sides of the runway affected.
If night time or low visibility ops are limited because of obscured runway lights, how should it be reported
Issue a NOTAMN, NOT NOTAMJ.
how are times coded for RSC and CRFI?
YYMMDDHHMM (10 figure date-time groups)
What is the order of information for the CRFI?
Temp (degrees C), Friction Coefficient, Time
Can information on the surface condition of Taxiways and Aprons be included in a NOTAMJ?
Yes, but it is optional. Only provided in NOTAMJ if provided to us by the APO. Use RMK before this info.
