Oma Flashcards
When are two destination alternates required?
- Conditions at dest below minima
- no weather forecast for dest
- land perf requirements cannot be assured due to dependence on specific wind component or RWY state
Planning minima for take off alternate?
- 1 hours flight time, ISA single eng
- 320nm
- cat for CAT 3 SINGLE
- planned take off weight
Planning minima for destination alternate if only NPA available
1000m
200ft
How long is a tempo forecast expected to last?
- period of up to an hr at a time
- up to half of the period of the TAF
Min RFFS Dep/dest
5 (if on OFP)
Or
4 (temp downgrades 72hrs)
Min RFFS alternates
UK - 5
None UK - 4
Fuel burn in hold
@ 1500ft =457.2 m 40kg/min
Fuel burn in approach
17kg/min
Minimum contingency fuel you can carry
Greater of
3% trip (normally carry 5)
5 mins holding above dest
(Provided ERA can be selected)
Process when overfuelled
- offload bags
- burn fuel on ground
- defuel (pax not allowed onboard)
- contact duty pilot to get >MTOW
Can you burn contingency fuel on ground?
Yes
Max distance for take off alternate
320
Max distance cruise alternate must be
319-380
320-400
321-400
When can we fly below CNR and continue to destination
When given EAT
- Landing at dest is assured with final res
When NOT given EAT
- Landing at dest OR alternate with final res
See you’re going to land at dest with less than CNR - what do you do?
- check for leak
- request slower speed
- check optimum winds/ levels
- replan using closer alternate
-DIVERT for fuel
Max LMC before new load sheet
+10/-20
When must performance be recalculated? (LMC)
- > 250kg
- > 2% CG
Minimum oil QTY - CEO
9.5qt + 0.5qt p/hr
When’s an oxygen demo required
Cruise FL250+
MFA anywhere above 14,000ft
Actions for bird strike
Advise
-ATC
-MOC
Complete
- techlog strip
- ASR
When can we use ‘for info’ following bird strike
As long as no:
Structural damage
Unusual odour
impact closer than 1m to REPPS
- radome
- engine
- pitot
- Pack inlet
- static port
When must we use TOGA takeoff
- When performance requires it
- RWY contaminated
- flight with gear extended
- wind shear reported
Min takeoff climb gradient requirements
2nd segment 2.4% gross
Final segment 1.2% gross
How to calculate landing & approach climb gradient?
Approach climb - appr config, SE, Gear up
Landing climb - landing config, both engines, landing gear down
Can you dispatch with anti skid inop?
No
What are the landing and approach climb gradient?
Approach - 2.1%
Landing - 2.5%
Low vis climb - 2.5%
Low vis wind limits
Head -30
Cross - 20 without auto rollout
15 with auto rollout
Tail. - 10
Min RVR for takeoff
125/125/125
Min visual for low vis takeoff
90m 6 lights
