Narrative:

On takeoff above 100 knots the left bleed tripped. The bleed would not reset. Advised dispatch and continued to [destination]. About 80 NM northwest of [departure airport] climbing through FL250; the right pack tripped. We donned 02 masks and performed the non-normal rapid depressurization procedure. To complicate this situation; there was a previous write-up on the captain's 02 mask mic. During preflight the mask tested normal. However; during this event; the 02 mask mic again failed. I had to yell around the mask mic to communicate. We [advised ATC] and began a [rapid] descent. We advised ATC and dispatch that we would divert to [a nearby alternate]. Passing 14;000 ft; we received a TCAS RA to descend. We continued descent. We saw the traffic on TCAS at about 5 NM; but not visually. At 10;000 ft we removed the masks. Flight attendant informed me the fwd lav smoke alarm was sounding. They said there was smoke. They then told me the smoke had quickly dissipated (most likely fog from the depressurization). We quickly set up for an overweight landing. We requested emergency equipment to meet us. I landed flaps 40 with minimal braking. I asked for an infrared scope to check the aircraft for hot spots. Only the tires were hot. We rechecked brake cooling requirements. We were then able to taxi to the gate. Logbook entries were completed for left bleed trip; right pack trip; captain 02 mask mic; smoke detector sounding; overweight landing and cvr circuit breaker pulled.

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Original NASA ASRS Text

Title: B737-700 Captain reported diverting to an alternate airport following loss of both packs climbing through FL250.

Narrative: On takeoff above 100 knots the left bleed tripped. The bleed would not reset. Advised Dispatch and continued to [destination]. About 80 NM northwest of [departure airport] climbing through FL250; the right pack tripped. We donned 02 masks and performed the non-normal rapid depressurization procedure. To complicate this situation; there was a previous write-up on the Captain's 02 mask mic. During preflight the mask tested normal. However; during this event; the 02 mask mic again failed. I had to yell around the mask mic to communicate. We [advised ATC] and began a [rapid] descent. We advised ATC and Dispatch that we would divert to [a nearby alternate]. Passing 14;000 ft; we received a TCAS RA to descend. We continued descent. We saw the traffic on TCAS at about 5 NM; but not visually. At 10;000 ft we removed the masks. FA informed me the fwd lav smoke alarm was sounding. They said there was smoke. They then told me the smoke had quickly dissipated (most likely fog from the depressurization). We quickly set up for an overweight landing. We requested emergency equipment to meet us. I landed flaps 40 with minimal braking. I asked for an infrared scope to check the aircraft for hot spots. Only the tires were hot. We rechecked brake cooling requirements. We were then able to taxi to the gate. Logbook entries were completed for left bleed trip; right pack trip; Captain 02 mask mic; smoke detector sounding; overweight landing and CVR circuit breaker pulled.

Data retrieved from NASA's ASRS site 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.