Part 121 Flashcards
what aircraft is part 121 relevant to
- MEA
- air transport operations; and
- max seat > 9; OR
- MTWO > 8618kg
define additional fuel
supplementary fuel required to allow for flight from from CP with most demanding of: - ENG FAIL - DEPRESSURISTION and: - fly to ALTN - hold 15 mins @ 1500' - approach and land
define final reserve fuel
- 30 mins over airport
- 1500’
- ISA
- hold speed
- estimated arrival weight
define isolated destination aerodrome
If RELEVANT DEST ALTN TRIP FUEL + FINAL RESERVE > fuel required to hold at cruise altitude for 2 HOURS at DEST + FINAL RESERVE FUEL
define relevant weather conditions
- CLOUD = > SCT
- VIS = anything limiting VIS (incl. PROB 30/40)
- WIND = any wind component (head, cross, tail) that exceeds aircraft limit
- THUNDERSTORMS (incl. PROB 30/40)
what does ETU stand for
Estimated Time of Use
what are the ETUs for the different scenarios
+/- 30 minutes for all except ISOL DEST AERODROME which = -30/+60
when does a PROB 30/40 no longer cause requirements
first 3 hours of TAF3
when is a takeoff alternate required
within +/- 30 mins ETD relevant weather exists < landing minima (adjusted for SEO)
what are the requirements for a departure alternate:
- (distance from departure airport)
- (weather requirements)
- distance:
within 1 hour flight time in SEO, still air, estimated takeoff weight (430nm) - weather conditions:
no relevant weather forecast below the landing minima (considering SEO)
note: INTER/TEMPO PROB 30/40 periods are not relevant
when is a destination ALTN required
- Ceiling: MDA for planned approach + 1000’ OR CIRCLING approach + 500’ if circling
- Visibility: higher of:
- VIS for planned approach + 2000m; OR
- 5000m
- Lighting:
- portable - unless RP
- NO STBY - RP with portable lights
- PAL AND STBY - RP to manually switch them on
note: light requirement for RP from ETA-30mins to completion of taxi OR first light+10mins
not required if HOLD FUEL carried for first light+10mins
when does the TAF3 rule apply
within 1 hour flight time of DESTINATION
what does the TAF 3 rule allow you to do
reduces the ALTN requirements to the 4.11 table
what are ALL the conditions required to apply the TAF3 rule
- within 1 hour flight time of intended DEST
- TAF3 appended to forecast
- ETA -30/+60 wholly contained within the TAF3 validity period
- ETA -30/+60 = NO relevant weather < 4.11 table (200’/800m OR 400’/circling & 800m/circling OR LSALT+500’/8000m)
- ETA +60 NO ATS delay in addition to what is already being carried
when are 2 DESTINATION ALTERNATES required AND what is the exception to the rule
- relevant weather below landing minima; OR
- no forecast
EXCEPTION: - if 1 planned alternate has all the requirements as if it were a DEST ALT (+1000’/+500’ and higher of 5000m/+2000m)
what does table 4.11 refer to
Minimums for:
- DESTINATION ALTERNATES
- ISOLATED DESTINATION AERODROMES
- ENROUTE ALTERNATES
what is the difference between a different and separate runway
- different = different number identifier (runway 03 and 21 are different runways)
- separate = runways at the same airport whereby if 1 runway were closed, operation to another runway is operationally available (YSSY 34L/ 16L)
what are the table 4.11 requirements (DEST ALTN, ISOL DEST AERODROME, ENROUTE ALTN)
- 2 IAP and 2 different suitable runways:
- ceiling: 2nd lowest MDA + 200’
- visibility: 2nd lowest MDA + 800M
- 1 IAP and 1 runway:
- ceiling: (highest of) 400’ above
- 2nd lowest MDA
- circling height
- visibility: (highest of)
- 2nd lowest MDA + 1500m
- circling visibility
- ceiling: (highest of) 400’ above
- NO IAP:
- ceiling: LSALT + 500’
- visibility: 8000m
how much fuel must be carried if 2 DEST ALTN are required
highest fuel amount
how much fuel need be carried if there is NIL DEST ALTN required
15 mins at 1500’ over destination in ISA
what is the DEST ALTN fuel required for a ISOLATED DESTINATION AIRPORT
2 hours holding at cruise level over ISOLATED DESTINATION AERODROME including FINAL RESERVE
what is the purpose of contingency fuel
to allow for unforseen circumstances
how much is contingency fuel
5% of trip fuel but not less than 5mins at 1500’ over DEST in ISA