Narrative:

Flight had write-ups with numerous deferrals. Trim air inoperative all zones; left pack degraded to standby-west; and auto speed brakes inoperative were the big ones. [It was a] warm day in the 90's with ground stop and delays going west. [It was] difficult to maintain comfortable cabin temp-- nearing 90 taxiing out. Line kept moving; kept in touch with flight attendants and though uncomfortable; we decided that once in the air; we would be able to cool the aircraft down. Nearing number one (nearing 90 minutes on the ground); status message for right engine eec C1 came up. [We] handled deferral with maintenance control; soon after status message for right engine a/O valve. Maintenance couldn't defer and had to return to gate. On taxi back; intermittent left bleed off EICAS occurred and we informed maintenance. Passenger deplaned and we talked with maintenance and dispatch. They worked several of the problems and within 2 hours we were set to go. Weather had cleared up and expected to be off in 15 minutes. External ground air was used to cool aircraft down before leaving. Regardless; the aircraft was still in mid 80's by departure. We took off and climbed to FL340. [The] warm outside air temp worked against us and even an hour in to flight; the zone temps were in the 80's. With two hours remaining we climbed to FL360 and began to cool down. Shortly after; EICAS for left bleed off the left pack off. Ran irregular and ended up with bleed and pack off. [We] talked with dispatch and maintenance control. Descended back to FL340 due to 1 pack ops (per dispatch) and planned to continue to destination. No weather issues. At FL340; just about 30 minutes from landing and briefing the passenger and flight attendant's; master warning for overspeed and numerous master cautions. A lot of my instruments were rolling back and had off flags. Saw the cabin climbing at 2;000 FPM. We downed O2; gave a PA to take seats and cycled seatbelt sign. Declared emergency and began descent to 16;000. Ran QRH for emergency descent. Passing FL240 saw rate was normal and cautions and warnings disappear. Talked with lead flight attendant and they didn't have any problems in the cabin. Things stabilized and we canceled emergency with center. Asked to go direct to field as things were confusing as what was occurring. On the arrival; my airspeed fluctuated and then went to 30 KTS. No other warnings other than rudder ratio and aileron tab lockout. Ran QRH; declared emergency with approach. Determined captain's instruments were good; continued on to land with and uneventful landing. Numerous problems; checklist; long day; the heat; and in landing phase led to compression of time.

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Original NASA ASRS Text

Title: B767 flight crew was dispatched with a degraded left pack in very warm ambient conditions with ground delays in effect. After 90 minutes flight returned to gate for maintenance pertaining to Engine A/O Valve Status message. After a 2 hour maintenance delay flight departed although cabin temperatures remained high. Approaching destination the First Officer's pitot static instruments fail necessitating an emergency declaration.

Narrative: Flight had write-ups with numerous deferrals. Trim air inoperative all zones; left pack degraded to standby-W; and auto speed brakes inoperative were the big ones. [It was a] warm day in the 90's with ground stop and delays going west. [It was] difficult to maintain comfortable cabin temp-- nearing 90 taxiing out. Line kept moving; kept in touch with Flight Attendants and though uncomfortable; we decided that once in the air; we would be able to cool the aircraft down. Nearing number one (nearing 90 minutes on the ground); status message for right Engine EEC C1 came up. [We] handled deferral with Maintenance Control; soon after status message for right Engine A/O Valve. Maintenance couldn't defer and had to return to gate. On taxi back; intermittent left bleed off EICAS occurred and we informed Maintenance. Passenger deplaned and we talked with Maintenance and Dispatch. They worked several of the problems and within 2 hours we were set to go. Weather had cleared up and expected to be off in 15 minutes. External ground air was used to cool aircraft down before leaving. Regardless; the aircraft was still in mid 80's by departure. We took off and climbed to FL340. [The] warm outside air temp worked against us and even an hour in to flight; the zone temps were in the 80's. With two hours remaining we climbed to FL360 and began to cool down. Shortly after; EICAS for left bleed off the left pack off. Ran irregular and ended up with bleed and pack off. [We] talked with Dispatch and Maintenance Control. Descended back to FL340 due to 1 pack ops (per dispatch) and planned to continue to destination. No weather issues. At FL340; just about 30 minutes from landing and briefing the passenger and Flight Attendant's; Master warning for overspeed and numerous master cautions. A lot of my instruments were rolling back and had off flags. Saw the cabin climbing at 2;000 FPM. We downed O2; gave a PA to take seats and cycled seatbelt sign. Declared emergency and began descent to 16;000. Ran QRH for emergency descent. Passing FL240 saw rate was normal and cautions and warnings disappear. Talked with lead Flight Attendant and they didn't have any problems in the cabin. Things stabilized and we canceled emergency with Center. Asked to go direct to field as things were confusing as what was occurring. On the arrival; my airspeed fluctuated and then went to 30 KTS. No other warnings other than rudder ratio and aileron tab lockout. Ran QRH; declared emergency with approach. Determined Captain's instruments were good; continued on to land with and uneventful landing. Numerous problems; checklist; long day; the heat; and in landing phase led to compression of time.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.