Originally Posted by Olendirk
so its like: speed above v2+15 i can use up to 30 degrees of bank on a 737,it doesnt matter one or two engines right?
bye!
OD
Olendirk, Yes and No. It depends upon whether you're speaking of All Engines Operation (AEO) or One Engine Inoperative (OEI).
YES - If your AFM/FCOM allows 30 degrees bank at V2+15, then this is in consideration of stall or manoeuvre margins, and, in the AEO condition, may be confidently used.
NO - In the OEI condition, manoeuvre at V2+15 at 30 degrees bank is still not a problem, but two further significant concerns arise -
(1) OEI performance is predicated upon a 15 degree bank angle limit to guarantee performance in this very performance limited situation. at 15 degrees bank, the aircraft is sustaining 1.035G, and is effectively 3.5% heavier. This "weight exceedance" is accounted for in establishig OEI 1st/2nd/3rd segment climb performance. At 30 degrees bank, the aircraft is sustaining 1.155G, and is effectively 15.5% heavier. Minimum 2nd segment climb performance would suffer accordingly, and clearance of obstacles would
NOT be assured, but the difference between Gross and Net performance MIGHT save your life if you fly the aircraft as well as the test pilot.
(2) A great number of Special / Specific Runway Procedures (OEISID if you like) require turns to avoid obstacles laterally, with a small (7 degrees and 8 minutes) splay either side of the projected flight path. The inner turn radius assumes a bank angle of 15 degrees. If you were to make the OEI turn at 30 degrees bank the inner turn radius would only be 46.4% of that considered, taking you out of the protected area and into an area of unknown, and unconsidered obstacles. Even flying better than the test pilot won't save your butt here.
Regards,
Old Smokey