Development/background of Perf A/PANS OPS

[Jwscud]

Can any of the experts point me at any good articles/papers on the history of developing takeoff performance, obstacle clearance and performance criteria and why certain gradients/clearances were chosen?

Similarly on IAP design and PANS OPS criteria.

[john_tullamarine]

ICAO Doc 7401.pdf - Google Drive should give you some entertainment with a flask of coffee.

[PEI_3721]

… and then there is a day when a golden nugget falls from the sky.



I wonder how the knowledge within this or the current document would influence modern pilots' perception of safety, the margins and assumptions in operations.

[john_tullamarine]

I see much value in introducing new chums to the wisdom gained from the blood shed in years long gone by. Unfortunately, not all folks agree with us.

[Jwscud]

John, that’s exactly what I was looking for - thank you. My day job involves working with the latest versions and sometimes explaining it to colleagues and I am a big believer in understanding the history and context behind designs and rule sets.

[megan]

Interesting document JT vis a vis the Comet take off accidents and lifting the nose wheel off early in the run



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[Jwscud]

Originally Posted by john_tullamarine

ICAO Doc 7401.pdf - Google Drive should give you some entertainment with a flask of coffee.

Two big thoughts on reading this on landing perf:

- When did the standard ILS or approach slope move from 2.5° to 3°? Was this driven by performance or obstacle issues?
- when did the standards go away from configuring from approach to landing flap when visual? I assume this was driven by increasing engine power and perhaps as discussed below the introduction of slats?