PPRuNe Forums - View Single Post - B727 drivers please
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Old 18th Apr 2008, 19:21
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hetfield
 
Join Date: Mar 2006
Location: Choroni, sometimes
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Oh my GOD, it's soooo long ago (20 years).

I'll give it a try.

As on most aircraft, pitch and power is the key for basic flying.

- T/O (full rated), the EPRs are about 2.10/2.12/2.10 for 15rated engines, pitch almost 20 deg for medium weight, at max about 15 deg
- CLB, EPR about 2.00/2.02/2.00 ~ 90% N1, pitch 10 deg for flap retraction,
- obtain flap speed schedule!!! From F15 to 5 look for 160kt, flaps 2 190kt, fl up 210kt (if above 70t add 10kt). If F5 T/O you should start with flap retr at V2 +20.
- Approach, 727 has very efficient speed brakes. Plan for a normal descent (height * 3) ROD about 5 * GS, if req it will go much steeper highest pitch will be with F5 and level, about 8-9 deg!!
- during approach with 170kt or so (F5) it may be necessary to reduce thrust below surge bleed valve rpm (~55%) a little help is to keep 1 and 3 above that value and #2 at idle
- final apprch, if I remember correct FF with F30 and undercarriage down was about 1.500 kg/h, pitch about 2.5 deg (medium weight)
- landing is a little tricky. Get it down to below 20 feet, retard power about half, pull a little and release or even push! But that's a different story. Don't forget reverse, but before pull groundspoilers if no auto-sys installed.

Wish you all the best.

Kind regards
hetfield
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