OMB Flashcards
(100 cards)
Where would you find the landing and approach climb gradients?
What is this based on? Can this be modified?
Landing perf application.
By default based on OEI and 1500’ AAL
Can be modified as minimum Eng out Acc Altitude is either:
-1500’ AAL (if VMC or following EO SID)
-Missed approach level acceleration altitude if published on IAC.
-Minimum flight altitude on missed approach procedure
-Initial go around altitude
Can you despatch with anti skid inoperative?
No.
It’s married to the NWS so the risk of having the nose wheel at 90degrees is too great.
What are the minimum take off climb gradients?
One engine inoperative:
Second segment: 2.4% gross
Final segment: 1.2% gross
SIDS may also specify all engine climb gradients when it exceeds 3.5%
What are the first officer handling limitations?
- Max X Wind 20kts inc gusts
- No planned tailwind landings for 4* FO’s
- No flaps 3 for 3* FO’s
Take off minima 550m - Approach minima: Cat 1 ILS, Published minima for no precision approaches. Min VIS for circling 5000m
- Min RYW width 45m unless trained.
- No contaminated runway or slippery runway condition.
- No reported wind shear
- No auto land for normal operations
What are the turbulence penetration speeds?
A319/320 CEO
250kts or .76 above FL200
A320 NEO
260kts or .76 above FL200
A321 NEO
275kts or .76 above FL200
What is the stability criteria?
Should be by 1000’ and Must be by 500’
- LDG config
- Correct lateral and Vertical flight path
- Speed +10 / -5
- Bank angle Max 15 degrees
1000’ go around if not in LDG config or speed VAPP +30
500’ Not stable
LDG checklist not completed
Stability criteria for circling approach.
By 400’ above touch down zone
AC in LDG config
LDG checklist completed.
Correct lateral and vertical flight path
Speed +10/-5
Bank angle max 15 degrees within +/- 30degrees of final track.
FINAL APP guidance call outs
The PM calls out if excessive deviation occurs:
XTK > 0.1nm
V/DEV > 1/2 dot.
(one dot corresponds to 100ft so half dot is 50ft)
AP Minimum use heights
Take off: 100’ AGL & 5 seconds - 100ft
FINAL APP / V/S or FPA - 250ft
Circling - 500ft
ILS CAT 1 - 160ft
If tankering fuel what is the maximum landing and take off weight?
MLW - 1%. Must also be MTOW -1%
Max LMC before new load sheet required?
+10 / -20 pax
In case of discrepancies between procedures / publications, what are the priorities for our manuals / oebs etc?
OFP company notams, OFP briefing pack attachments
NTC’s
OEB’s
Operations manuals OMA etc
Airbus FCOM/QRH
FCTM
Guidance material
On what runway condition is a takeoff not permitted ?
- Wet ice
- Water on top of compacted snow
- Dry snow or wet snow over ice
Can a takeoff be started with a RWYCC of 0 ?
No, no takeoff or landing allowed
What is the minimum runway width to be cleared/treated ?
30m, a runway wider than 45m can be cleared to a width of less than 45m from the centerline. It should not be considered as narrow runway.
When is one eng taxi out prohibited ?
- Taxiway slippery
- LVP at dep aerodrome
- pushback completed with a powerpush on the main landing gear
What technical defect prevent you from doing a single engine taxi ?
Hydraulic: no yellow electrical pump
electrical : gen 1 failed, Apu gen must be serviceable for aircraft without the SETWA
Pneumatic/air conditioning : Air pack 1
issue with steering or breaking
What are the first officer limit ?
Max crosswind including gust : 20kts minimum RVR 400m Approach minimum : CAT I ils, Minima of NPA, 5000m vis for circling No contaminated rwy or slippery no reported windshear
What is the minimum battery voltage when powering the A/C ? Can a APU fire test be done when below it ?
Minimum 25.5V
No, risk of APU extinguisher discharge
WARNING:
DO NOT PERFORM APU FIRE TEST IF BATTERY VOLTAGE IS AT OR BELOW 25.5 V AS THIS MAY RESULT IN THE DISCHARGE OF THE APU FIRE EXTINGUISHER BOTTLE. OMB 2.3.4.2
What is the maximum time you should hold the APU fire test PB ?
No more than 3 sec, otherwise it might auto shutdown and discharge APU fire bottle
WARNING:
THE AUTOMATIC SHUTDOWN OF THE APU AND THE DISCHARGE OF THE APU FIRE EXTINGUISHER BOTTLE MAY OCCUR IF THE FLIGHT CREW PRESSES THE APU FIRE TEST PB FOR MORE THAN 3 SECONDS. OMB 2.3.4.3
When should a complete IRS alignment be done ?
- Before the first flight of the day, or
- When there is a crew change, or
- When the GPS is not available and the NAVAIDS coverage is poor on the expected route, or
- When the GPS is not available and the expected flight time is more than 3 h.
OMB 2.3.4.5
When should you do a fast alignment ?
A fast IRS alignment must be performed if a complete IRS alignment is not necessary and the difference between the IRS position and the FMGC position is at or above 5 NM
What is the minimum oil quantity ?
- (CEO): Check that the oil quantity is at or above 9.5 qt + estimated consumption (average estimated consumption ~ 0.5 qt/h).
- (NEO): Check that the minimum oil quantity is the highest value of:
10. 6 qt, or
8. 9 qt + estimated consumption (average estimated consumption ~ 0.45 qt/h)
Note 1:(NEO) If the engines have been shut down for more than 60 min, decrease the above quantities by 3 qt to take into account the oil thermal expansion.
OMB 2.3.4.8
When should you set the pack flow to LO ?
A319/A320 : Less than 130pax
A321 : Less than 160pax
OMB 2.3.6.2