B737-800
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance; Flight Crew Diverted; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Flying Aircraft X on a ferry flight from ZZZ - ZZZ1. Climbing out of FL350 for FL390 the flight crew was alerted of a bleed trip off of the No.2 Pack. The Bleed Trip Off QRH was called for and completed with no resolution as we leveled at FL390. As directed by the QRH the No.2 pack was turned off. At this moment ATC gave us a clearance up to our cruising altitude of FL410. The crew declined the request and relayed the need for a lower altitude (initially FL310). The request was granted and the crew began descending the aircraft to assure the single pack could maintain adequate cabin pressure. Passing FL380 the crew received a cabin altitude warning light. The appropriate memory items where accomplished; requested priority handling and descent to 10;000 was initiated. During the descent; the high cabin altitude and decent QRH procedure were accomplished by the First Officer while the Captain negotiated the descent. Passing through 27;000 feet the cabin altitude reached a level which activated the automatic deployment of the oxygen masks. Reaching 10;000 feet; the Captain verified aircraft was stabilized; crew was checked for any injuries; and the FO attempted to reach company via AIRINC. With the low altitude prohibiting any contact with ARINC and the aircraft was not equipped with datalink; the discussion began on where to go next. Departure airport ZZZ was approximately 200 NM behind us. ZZZ2 was 190 NM in front of us. And the Destination of ZZZ1 was an additional 300 NM past ZZZ3. The crew discussed the options and in an abundance of safety elected to divert to ZZZ3. The crew notified ATC of the decision to change destination and asked the ATC facility to notify our company of the situation and destination change. The flight continued to ZZZ3 and landed without further incident. Dispatch and Chief Pilot were notified once the aircraft landed.Gaining the ability to contact dispatch Via ACARS when AIRINC is not contactable would have helped in the decision making of this flight.
B737-800 First Officer reported executing an uneventful landing after a mechanical diversion due to a pressurization pack failure during climb.