Performance Related

Question 1

Damp Runway

Answer 1

OMA 0.1.13.1(72)

When the surface is not dry, but when the moisture on it give it a shiny appearance.

For performances it is considered dry

Question 2

Wet runway

Answer 2

OMA 0.1.12.1(172)

covered with less than 3mm of water or when there is sufficient moisture to make it appear reflective

OMA 8.3.8.7.3

A dry runway with water puddles covering more than 10% of the runway must be considered wet for performance calculations

Question 3

Contaminated runway

Answer 3

OMA 0.1.12.1(60)

when more than 25% of the runway is covered by:

• water 3mm or more
• slush, loose snow equivalent to 3mm or more
• compacted snow
• ice, wet ice

Question 4

Operations on contaminated runways should be

Answer 4

OMA 8.3.8.7.1

Should be avoided whenever possible

Question 5

Take off and landing on a runway with braking action poor is

Answer 5

OMA 8.1.0.3

Prohibited

Question 6

Calculate Takeoff From contaminated runway

Answer 6

FCOM PI 27.3 (737-800)
FCOM PI 20.7 (737-800)

FCOM SP 16.1
Take off is not recommend when slush, wet snow or standing water is more than 13 mm
or
Dry snow depth is more than 102mm

FCOM NP 60.4
- Reduced thrust is not allowed on contaminated/slippery
runway

OMA 0.1.12.1(60)

A runway is contaminated when more than 25% of the runway is covered by:

• water 3mm or more
• slush, loose snow equivalent to 3mm or more
• compacted snow
• ice, wet ice

Question 7

What are two methods to reduce engine thrust

Answer 7

FCTM 3.21

• Derated take off thrust
• Assumed temperature method (ATM)

Question 8

What is the difference between slippery runway charts and contaminated charts

Answer 8

FCOM 27.4(737-800)

Slippery runways are runways with reported braking action that are not contaimanted

Question 9

Max depth for contaminated runway

Answer 9

FCOM SP 16.1

Take off is not recommend when slush, wet snow or standing water is more than 13 mm
or
Dry snow depth is more than 102mm

Question 10

Conditions not allowing the use of Reduced thrust takeoff

Answer 10

FCOM NP 60.4

Windshear or surface temperature inversion
Intersection takeoff less than 2438m(8000')
Self dispatch using PD in FCOM 
EEC alternate
Contaminated/slippery runway
Using MEL/AFM restrictions
Using improved climb
Bleeds off
Anti-skid inop

Question 11

Dispatch with gear down requires

Answer 11

FCOM NP 60.4

Temporary charts will be produced

Question 12

Intersection take off is not allowed when

Answer 12

FCOM 60.5

• Contaminated runway
• Windshear conditions are anticipated
• When braking action is poor

Question 13

Improved climb is not allowed when

Answer 13

FCOM 60.3

• Anti-skid inoperative
• Contaminated runway

Question 14

Oman Air preference for RTOW charts

Answer 14

FCOM NP 60.3

Engine bleeds ON Reduced
Engine bleeds ON Maximum
Engine bleeds OFF Maximum
Engine bleeds ON Maximum/Improved climb
Engine bleeds OFF Maximum/Improved climb

Engine bleeds off comes before improved climb because a bleeds off take off is less risky than high speed take off

Question 15

Anit-Ice ON and RTOW corrections

Answer 15

FCOM NP 60.5/Preamble RTOW pg. 7

Most restrictive is to climb limit weight
Engine AI ON -250 KG
Engine and wing AI ON -1500 KG

However FPPM Ch 1.2 MUST be referred to for the latest revision

Question 16

Derated take off thrust may permit a higher take off weight when performance is limited by

Answer 16

FCTM 3.22

Vmcg

Question 17

Color coding of charts

Answer 17

FCOM NP 60.6

White - Normal
Blue - less than 2438m(8,000’) - Capt only Take off, FULL
thrust
Yellow - temporary charts as per NOTAMS

Question 18

Max temperature to start engines

Answer 18

AFM

• Sea level is 54C denoted by “A” on charts

each drop in HPA is 30’. A drop of 20 HPA is approx. 700’. Every 700 feet temperature drops by 2C

Question 19

Explain Noise Abatement Procedures

Does Muscat have a NAP

Answer 19

Jepp

NAP 1: 800’ thrust reduction, 3,000’ flap retraction and accelerate(quiet at the airport)

NAP 2: 800’ thrust reduction, flap retraction and accelerate(quiet at a distance)

Jepp plate for OOMS

Yes avoiding Sultans Palace

Question 20

Braking action Coefficients/Codes

Answer 20

OM B 1.1.12.4.1
Coefficients

Jepp
Braking action codes

Question 21

LMC procedures

Answer 21

OM A 8.1.8.10

Traffic load +/- 400 KG
Center tank +/- 1000 KG
index +/- 5%

After LMC actual ZFW, TOW, LAW must be amended Unless the LMC is less tan 100 KG

If the LMC excess the above a new load sheet must be prepared

LMC is allowed on ACARS load sheet. Both copies must be updated

2 copies must be printed and signed by PIC