Narrative:

During descent; I was called by flight attendant and informed that an elderly male was experiencing what appeared to be heart problems. He was on oxygen and not doing well; being in and out of consciousness. Handed the aircraft over to the first officer; who did an outstanding job; and took over role of monitoring pilot as well as working the emergency. After declaring the emergency; and working the ATC and ground operations issues; as well as coordinating actions with the cabin; I failed to select 7700 on the transponder. We have no reference lists for this type of event; so no checklists were missed; but due to workload; simply forgot to squawk emergency. Most likely due to an all-nighter; I believe lack of alertness due to normal fatigue was an issue. Possibly a generic emergency checklist; not associated with a specific aircraft or security procedure.

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Original NASA ASRS Text

Title: CABIN ATTENDANT ADVISED FLT CREW OF ILL PAX. CREW DECLARED EMER AND LANDED ASAP; BUT FAILED TO SELECT 7700 ON THE XPONDER.

Narrative: DURING DSCNT; I WAS CALLED BY FLT ATTENDANT AND INFORMED THAT AN ELDERLY MALE WAS EXPERIENCING WHAT APPEARED TO BE HEART PROBS. HE WAS ON OXYGEN AND NOT DOING WELL; BEING IN AND OUT OF CONSCIOUSNESS. HANDED THE ACFT OVER TO THE FO; WHO DID AN OUTSTANDING JOB; AND TOOK OVER ROLE OF MONITORING PLT AS WELL AS WORKING THE EMER. AFTER DECLARING THE EMER; AND WORKING THE ATC AND GND OPS ISSUES; AS WELL AS COORDINATING ACTIONS WITH THE CABIN; I FAILED TO SELECT 7700 ON THE XPONDER. WE HAVE NO REF LISTS FOR THIS TYPE OF EVENT; SO NO CHKLISTS WERE MISSED; BUT DUE TO WORKLOAD; SIMPLY FORGOT TO SQUAWK EMER. MOST LIKELY DUE TO AN ALL-NIGHTER; I BELIEVE LACK OF ALERTNESS DUE TO NORMAL FATIGUE WAS AN ISSUE. POSSIBLY A GENERIC EMER CHKLIST; NOT ASSOCIATED WITH A SPECIFIC ACFT OR SECURITY PROC.

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.