OCA Questions Flashcards
Why is Vr increased for an icing take off?
Because V2 is also increased so Vr is increased to reach V2 by the 35ft screen height.
Degrees per mile for 15nm arc
4*/nm
Degrees per mile for 12nm arc
5*/nm
Degrees per mile for 10nm arc
6*/na
Climb gradient calculation
Grounds speed x climb gradient (%) = required ROC
Currency requirements
Under the AMS:
- Within 35 days - minimum of one sector (if exceeded - 2 sectors with a training captain or 2 hour sims session is req)
- Annual line check
- 6 monthly OCA
On top of that:
- if absent more than 14 days days the pilot has to complete the recency CBT module.
- if absent for 45 days or more, the pilot has to complete both a sim session and 2 sectors with a training captain.
Vis / Cloud base below minimas. Can you continue past the FAF?
Yes for the cloud base. No for the visibility
Where do you find TIBA procedures?
Rear of the south flip, ENR 1.5-13 (pink pages)
Why is it good to monitor NP on a failed engine?
Oil in layering seals can wreck engine on subsequent start up.
An engine that is shut down shouldn’t be turning and creating oil pressure - hence a bigger overhaul required by engineers.
Low Vis T/O req >800m
- Both pilots qualified
- Runway approved. Centerline markings
- ATPCS working
- Visibility 14 rows of lights
- Departure Alt must be notified
Requirement for 2 alternates
If forecast indicate that at the ETA of arriving at the destination, the cloud base and or visibility is below the normal approach minima. i.e fog vis below landing minima
- one alternate that meets 1000ft above the DA/MDA and 5km vis or 2km above minima.
- two alternates that meet the standard alternate minima.
Wake turbulence for T/O from mid point - heavy
3 min
Wake turbulence for T/O from mid point - A380
4 min
Wake turbulence for T/O from start of runway - heavy
2 min
Wake turbulence for T/O from start of runway - Super heavy
3 min
Wake turbulence distance between aircraft following each other: Heavy
5nm
Wake turbulence distance between aircraft following each other: Super heavy
7nm
Speed control for aircraft on a visual and instrument approach
- 4nm for visual approach
- 5nm for instrument approach
What does the T/O configuration test?
- Pwr MGT T/O
- Flap 15
- Pitch trim in green range
- TLU Low Speed
- Ail Lock light extinguished
Minimum fuel reserve
30 min of holding at the destination airfield at 1500ft
What fuel contingency percentage is required for A-B and B-C
- 6% for A-B
- 3% for B-C
Difference between FAF and FAP
- FAP is for ILS
- FAF is for non precision
Response time for a TCAS RA
5 sec
2.5 sec for reversal
Why do some abnormal procedures have warnings instead of cautions?
Require memory items
What are the different methods of ensuring terrain clearance?
- Visual
- Radar
- Evaluated climb gradients / VORSEC charts
- SID’s / STAR’s / Approaches
- AMA (Area minimum altitude)
- DME steps
- MSA
Altimeter difference tolerance
60ft on ground at Sea Leavel or at 8000ft. 120ft between IESI and normal altimeters
Where do you find departure alternates
In the route guide - under ‘Area’ NZ
What is 201nm rule
Aircraft must not fly in an area that is more than 201nm from an aerodrome listed in the categorization table (route guide) that meets following requirements:
- Met reporting service
- At least 1 let down aid
- Sufficient lighting
Minimum reuse fire service (RFS) category
Cat 3. Can be reduced to Cat 1 for no more than 72 hours
Can a passenger carry a mobility scooter in the cabin?
Yes up to 300whr battery
Requirement for extra passenger oxygen carried in the cabin
Engineering must make an entry in the tech log. No NOTOC is required
Max weight for CAT B circling approach in icing
21500kg
Cooling time after aborted take off
10 mins
Minimum Acceleration altitude for approach into 34 Wellington single engine
3000ft
Sever Icing Definition
- Ice covering a substantial part of the un heated section of the side window
- Unable to maintain speed
- Water splashing on window
- Extensive ice accumulated on on the airframe in areas not normally observed
- Ice accumulation lower surface of wing aft of the protected area
- Ice accumulation on spinner further aft than normally observed
With both DC Gens failed and the TRU on, what busses are supplied
DC EMER BUS, DC ESS BUS, DC&AC STBY BUSSES.
Why do you turn off the green hydraulic pump during a dual DC Gen failure?
To shed the load of AC power for the TRU to work
Why can you not do a flaps 30 landing after a sever ice incident?
If there is still ice on the tail plane, setting flaps 30 can cause the airflow over the tail to separate and cause a tail stall. (Recovery is the opposite to a standard stall).
During the sever icing checklist, if there is an uncommanded roll when AP is disconnected, what would you do?
Stall procedure
Low Vis T/O req 400 - 800m
- Both Pilots qualified, Performed by CM1.
- Runway Approved. Centerline markings, Edge lighting must be on, Secondary power supply must be serviceable.
- ATPCS on
- Full runway length used
- When lined up, 7 rows of lights visible
- 10kts X wind max
- Departure alt nominated.
Mandatory use of NP 100%
Surface wind including gust exceeds 40kts
Comms failure on departure with level restriction
- Maintain last assigned level to points specified then climb to maintain cruise alt from flight plan.
- If no points specified, maintain last assigned level for 5 min, then climb to cruise alt from flight plan.
Comms failure on departure under radar vectors
Maintain last assigned vector for 2 min, then climb to minimum safe altitude if necessary to maintain terrain clearance then proceed as per flight plan.
Vapp calculation
Vref
+ 1/3 hwc or gust factor (up to 15kts)
What can cause an engine flame out other than mechanical problems
- mismanaged fuel
- heavy rain or ice
- heavy turbulence
When are the ALD and the LDTA charts used in a flight?
- ALD tables are used following in-flight failure affecting aircraft performance
- LDTA tables are used during ‘normal operations’ i.e., no in-failure affecting landing performance, however MEL performance penalties can be applied.
What is ALD
Actual landing distance:
ALD is the actual demonstrated distance necessary to land an aircraft from a point 50ft above the threshold and come to a complete stop, as demonstrated in manufacturer flight testing.
Deceleration is achieved using normal braking, antiskid operative and both PL at GI (no reverse)
ALD represents best performance and is generally only used for abnormal/emergency conditions or to calculate RLD
What is RLD
Required landing distance:
RLD is ALD factored by 1.43 to comply with Part 121 requirements to achieve a full stop landing within 70% of the total runway length (dry) e.g., with an ALD of 700m the runway available must be 1000m. In wet conditions, 115% of the dry RLD must be available. For contaminated runway operations, either the wet RLD or the manufacturer’s contaminated landing data will be used, whichever is greater
What is LDTA
Landing distance at time of arrival:
Used in SPS
Rather than use ALD for inflight calculations, most manufacturers now provide performance data that is based on more operationally realistic criteria, in that it provides for normal pilot skill and operating conditions (in comparison, ALD is derived from the certification flight tests conducted by test pilots).
LDTA also includes a 15% safety factor on top of this operational landing distance. Air NZ company policy across all fleets is that inflight data must preserve the 15% safety margin unless an emergency condition necessitates using shorter landing distances (ALD).
Can you operate to an aerodrome if there is contaminated runway
Yes but only if it has an ATS
What restrictions are there when landing in less than 1000m visibility
- Captain only approach.
- Max crosswind of 15kts
