Narrative:

At FL370; smooth ride; received right pack high temperature master caution. Captain requested descent to FL250 while first officer ran checklist. Right pack high temperature master caution went out. Pack did not reset or come on. Cabin altitude remained steady (+200 ft). Cabin differential was steady. Uneventful descent to FL250. Upon leveling at FL250; applying power and stable; received left pack high pressure. Captain requested 'emergency descent.' first officer ran checklist. Descent initiated to 10000 ft. Air emergency declared. Left pack reset itself. Resumed normal operations. Approximately 160 NM from ZZZ; attempted to obtain ATIS. We were too low of an altitude to receive it. Requested center to retrieve ATIS WX and ATIS letter for initial contact with approach. We were told; 'unable that information;' and could receive AWOS WX instead. Crew acknowledged ok. Very soon after; a different voice controller on center came back to us with a comment regarding our status that flight crew was confused by. No other reference was made as to our status on continuing on to ZZZ. Upon arrival to approach control airspace; after just switching from center frequency to approach frequency; listened to ATIS and received ATIS letter code to use on initial call with approach. On initial call with approach; we were given vectors/headings to ZZZ while on the downwind to runway 1 at ZZZ on a heading of 150 degrees and told to expect visual runway 1. Waiting for an approach clearance; approach advised us that we would not be landing at ZZZ and expect vectors to land at ZZZ1. Vectors were issued and normal approach and landing was accomplished. Upon arrival at ZZZ1; we were instructed to taxi to the ramp. Meanwhile; no other information was given to flight crew as to what was going on. Taxied to the ramp; instructed to talk to airport operations in the follow-me truck; and was told to shut down and park and meet security at the door. Local/airport police came onto the aircraft and searched and asked security questions. At this point; it was told to the flight crew as to why we were diverted to ZZZ1 and were asked to see proper identify. Upon completion of security inspection and questions; we were released to the gate. Callback conversation with reporter revealed the following information: the reporter stated that the written investigative review he received indicated a confusion at the ATC facility over the ATIS information request. ATC understood that the crew was asking for the ATIS information alphabet assignment letter (alpha; bravo; charlie; etc) when in fact the crew was asking for the actual reported WX conditions. Uncertainty developed over what was said and someone ordered the flight to ZZZ1 prior to proceeding to ZZZ. Only after the tapes were reviewed by the tsa; ATC; and the flight crew's company did the events become clear and the crew exonerated of any wrongdoing.

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Original NASA ASRS Text

Title: A CL65 CREW EXPERIENCED PRESSURIZATION PROBS AND CONDUCTED AN EMER DSCNT. SUBSEQUENTLY; AS THE FLT CREW WAS ATTEMPTING TO RECEIVE ATIS INFO; THE FLT WAS ORDERED TO AN ALTERNATE ARPT.

Narrative: AT FL370; SMOOTH RIDE; RECEIVED R PACK HIGH TEMP MASTER CAUTION. CAPT REQUESTED DSCNT TO FL250 WHILE FO RAN CHKLIST. R PACK HIGH TEMP MASTER CAUTION WENT OUT. PACK DID NOT RESET OR COME ON. CABIN ALT REMAINED STEADY (+200 FT). CABIN DIFFERENTIAL WAS STEADY. UNEVENTFUL DSCNT TO FL250. UPON LEVELING AT FL250; APPLYING PWR AND STABLE; RECEIVED L PACK HIGH PRESSURE. CAPT REQUESTED 'EMER DSCNT.' FO RAN CHKLIST. DSCNT INITIATED TO 10000 FT. AIR EMER DECLARED. L PACK RESET ITSELF. RESUMED NORMAL OPS. APPROX 160 NM FROM ZZZ; ATTEMPTED TO OBTAIN ATIS. WE WERE TOO LOW OF AN ALT TO RECEIVE IT. REQUESTED CTR TO RETRIEVE ATIS WX AND ATIS LETTER FOR INITIAL CONTACT WITH APCH. WE WERE TOLD; 'UNABLE THAT INFO;' AND COULD RECEIVE AWOS WX INSTEAD. CREW ACKNOWLEDGED OK. VERY SOON AFTER; A DIFFERENT VOICE CTLR ON CTR CAME BACK TO US WITH A COMMENT REGARDING OUR STATUS THAT FLT CREW WAS CONFUSED BY. NO OTHER REF WAS MADE AS TO OUR STATUS ON CONTINUING ON TO ZZZ. UPON ARR TO APCH CTL AIRSPACE; AFTER JUST SWITCHING FROM CTR FREQ TO APCH FREQ; LISTENED TO ATIS AND RECEIVED ATIS LETTER CODE TO USE ON INITIAL CALL WITH APCH. ON INITIAL CALL WITH APCH; WE WERE GIVEN VECTORS/HDGS TO ZZZ WHILE ON THE DOWNWIND TO RWY 1 AT ZZZ ON A HDG OF 150 DEGS AND TOLD TO EXPECT VISUAL RWY 1. WAITING FOR AN APCH CLRNC; APCH ADVISED US THAT WE WOULD NOT BE LNDG AT ZZZ AND EXPECT VECTORS TO LAND AT ZZZ1. VECTORS WERE ISSUED AND NORMAL APCH AND LNDG WAS ACCOMPLISHED. UPON ARR AT ZZZ1; WE WERE INSTRUCTED TO TAXI TO THE RAMP. MEANWHILE; NO OTHER INFO WAS GIVEN TO FLT CREW AS TO WHAT WAS GOING ON. TAXIED TO THE RAMP; INSTRUCTED TO TALK TO ARPT OPS IN THE FOLLOW-ME TRUCK; AND WAS TOLD TO SHUT DOWN AND PARK AND MEET SECURITY AT THE DOOR. LCL/ARPT POLICE CAME ONTO THE ACFT AND SEARCHED AND ASKED SECURITY QUESTIONS. AT THIS POINT; IT WAS TOLD TO THE FLT CREW AS TO WHY WE WERE DIVERTED TO ZZZ1 AND WERE ASKED TO SEE PROPER IDENT. UPON COMPLETION OF SECURITY INSPECTION AND QUESTIONS; WE WERE RELEASED TO THE GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE WRITTEN INVESTIGATIVE REVIEW HE RECEIVED INDICATED A CONFUSION AT THE ATC FACILITY OVER THE ATIS INFO REQUEST. ATC UNDERSTOOD THAT THE CREW WAS ASKING FOR THE ATIS INFO ALPHABET ASSIGNMENT LETTER (ALPHA; BRAVO; CHARLIE; ETC) WHEN IN FACT THE CREW WAS ASKING FOR THE ACTUAL RPTED WX CONDITIONS. UNCERTAINTY DEVELOPED OVER WHAT WAS SAID AND SOMEONE ORDERED THE FLT TO ZZZ1 PRIOR TO PROCEEDING TO ZZZ. ONLY AFTER THE TAPES WERE REVIEWED BY THE TSA; ATC; AND THE FLT CREW'S COMPANY DID THE EVENTS BECOME CLR AND THE CREW EXONERATED OF ANY WRONGDOING.

Data retrieved from NASA's ASRS site as of January 2009 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.