MD-11
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Aircraft Equipment Problem Dissipated; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft
Just before descent at FL300; on the Arrival; I noticed an acrid smell and then saw smoke pouring into cockpit from what seemed like 'everywhere'. First Officer (FO) and I simultaneously reached for and donned our O2 masks. I was Pilot monitoring (PM) and took aircraft control. I coordinated with ATC for vectors direct [destination] and a descent. The FO established cockpit communication and we troubleshot the problem. The arrival and approach had been briefed. We had no warnings; or cautions; just smoke. We turned the #2 Pack off and turned the air temperature down. The smoke stopped billowing out and began to dissipate. We checked on the [passengers] and they had no indications of fire; or smoke. We briefed them what was going on and what our plan was. After 5-10 minutes no smoke was visible; or smelled. We stowed our O2 masks and continued without them. The HUD was MEL-ed and proved distracting because of bad information on the previous flight. We transferred control back to the FO during the descent. He made an uneventful approach and landing; taxied clear to taxiway S via S4. Emergency vehicles met and inspected us; then led us to parking. Aircraft Maintenance was debriefed at the jet as was the duty officer telephonically. The maintenance write up stated that 3 water separators were changed and the aircraft was returned to service. Change water separators; or inspect more frequently.
MD11 flight crew reported smoke in the Flight Deck. They donned oxygen masks and ran the appropriate checklist. This resolved the problem and they continued to destination.