Need Help on UKCAA Performance 'A'

[Droste]

I have some questions (based on UK-CAP385). Can anyone help?

[Nashers]

try putting the questions up? that tends to help!

[whiskey1]

Did not think Performance A Exam existed any more.
If you had not done it pre JAA and want to fly a Perf A Aircraft thought you had to go back and do the new JAA Performance Paper. Know a few people who have do it this way.

W1

[Droste]

UKCAA not UK-JAR/JAA

Originally Posted by whiskey1

Did not think Performance A Exam existed any more.If you had not done it pre JAA and want to fly a Perf A Aircraft thought you had to go back and do the new JAA Performance Paper. Know a few people who have do it this way.

I knew somebody will get mistaken. It is the UKCAA Performance 'A' not JAA Performance 'A'.

Lots of people are unaware that UKCAA still administer UKCAA examination (not UK-JAR/JAA FCL examination).

[Droste]

Question 1

Given the following data what is the maximum assumed temperature which may be used to calculate variable thrust for take-off?

• Aerodrome PA: 4000ft
• OAT: +15C
• 'D' for FLL TOW: 3250m
• Actual TOW: 170,000kg
• ACS packs: off
• Assumed temperature limited by WAT: +37C

a)+30C b)+34C c)+37C d)+26C

What I did: Using (UK-CAP385)(Fig13) 4000ft, 3250m & 170,000kg, I get 37.5C. After that, 37.5C used in Fig 4 to get EPR 1.488. Now, I am stuck...

[Droste]

Question 2

A take-off path contains two significant obstacles as follows:
Obstacle one
Distance from zero reference: 780m
Height above zero reference: 96ft
Obstacle two
Distance from zero reference: 1210m
Height above zero reference: 128ft

Given the following data what is the minimum gradient required to clear both obstacles:

• Aerodrome PA: 11ft
• OAT: +25C
• ACS packs: off
• Slope: nil
• HWC: 10kts
• FLL TOW: 202,500kg

a)4.7% b)4.2% c)4.4% d)4%

What I did: Using (UK-CAP385)(Fig18) false temperature 29C, I get 3.25%. I am trying to solve using Fig29 to get the answer. I am stuck...

[Megaton]

I think you'll struggle to get an answer on here, fella. It's been quite a while since anyone did a CAA exam in the UK so hardly anyone will have the graphs (or the expertise!).