OMA

Question 1

8.3.3.1 Serviceability Checks of Altimeters

Answer 1

1. Set aerodrome QNH and check indication ± 50 feet of aerodrome elevation, and within 50 feet of each other
2. Ensure rotation of setting knob ± 10mb produces movement of the indication ± 300ft

Question 2

The following deviations from the planned flight path require a Deviation Call from the PM.
Note that the calls “fast” and “slow” are used in connection with speed, and that the calls “high” and “low” are used in connection with altitude / height, in order to avoid confusion.

When is a deviation call required?

Answer 2

Trigger:

• IAS -> IAS 10 KTS fast/slow
• MDA(H) -> Altitude 50’ high / 20’ low
• Altitude/Height -> Altitude 100’ low
• Heading/Track -> 5° left of assigned heading
• Bank Angle > Check Bank Angle (30° AEO / 20°OEI)
• ROD -> Sink Rate High (1000’/min or 600’/min < 500’)
• LOC / G/S -> 1 dot low on G/S

Question 3

It is the Commander’s responsibility to ensure that a distress call is transmitted. The call shall be transmitted on the flight following frequency, either when two-way contact on that frequency has been established or by transmitting “in the blind”.

Alternatively, the emergency frequency or any other suitable frequency may be used.

As a general guideline regarding situations which should require a MAY DAY CALL but not limited to:

Answer 3

1. Dual Engine Failure
2. Engine fire
3. Fire/smoke on-board
4. Helicopter control problems due to failure of vital systems
5. Pilot Incapacitation
6. Low on fuel/less than final reserve before landing
7. Unruly passengers endangering flight safety
8. Failure of systems or indications that may develop into a critical situation

Note: With reference to the last bullet point, the Commander must exercise his own best judgment when assessing the situation when confronted with the complexity of a non-defined area or the urgency/risk imposed by a system failure or indication.

The PAN-PAN CALL shall be used for all other abnormal/emergency conditions necessitating an urgency call.

Note: It is emphasised that it is Commanders discretion to use a Mayday call or revise a Pan Call into a Mayday call whenever it is deemed necessary. The main concern should be the safety and survivability of crew and passengers.

Question 4

The MAYDAY CALL shall be transmitted when a condition has developed which represents a serious threat or imminent danger to the aircraft and shall include the following items:

Answer 4

• Mayday, Mayday, Mayday
• Name of station addressed
• Call sign
• Nature of distress
• Present position, altitude and heading
• Intention of Commander