B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP)
Time Pressure; Confusion; Workload
ATC Issue All Types; Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Flight Crew Took Evasive Action
Aircraft; Procedure
Cleared for arrival. Set 4;500 FT in altitude window for lowest altitude; not cleared for a runway so put ALT prior to runway selection. In LNAV and VNAV. Crossed the first constraint below 16;000 FT and headed to the next waypoint. VNAV could not descend to cross below 11;000 FT per STAR with throttles at idle and speed brake fully extended. Crossed at 11;800 FT. Noted that this is a common problem since winglet installation. Aircraft later leveled at 8;200 FT and would not descend in VNAV to follow STAR restrictions. Selected FL change and managed restrictions manually. Landed without incident and ATC did not mention this as a problem but felt we should report it. You have 4.1 miles to cross 5;000 FT lower and VNAV could not manage this. Could not make the extra 800 FT using speed brakes at idle either.
We had initially been told to maintain 260 KTS until ZZZZZ waypoint. The aircraft was having difficulty maintaining speed. Slowed at 10;000 FT; then the aircraft leveled off at 8;200 FT; VNAV was still selected. At one point we noticed we had to lose 5;000 FT in about five miles. I am not 100% sure of the intersection. The Captain extended the speed brakes and accelerated the descent. We failed to make the crossing restriction.
A B767-300 crew reported they were unable to descend on a profile descent and cross at the altitude constraints.  The efficient winglets reportedly would not allow a steep enough descent.