DENTI,
MY QRH IS THE SAME AS YOURS,I DO AGREE THAT HAVING LEFT PACK ON WILL HELP TO REDUCE POSSIBILITY OF SMOKE GOING INTO THE COCKPIT
BUT WITH REC FANS OFF THAT SHOULD MINIMIZE THE WORRY.FURTHER MORE THE SMOKE SOURCE IS IN THE CARGO HOLD NOT AS CRITICAL AS SMOKE IN THE CABIN.IN MY OPINION,HAVING ONE PACK INSTEAD OF TWO WILL REDUCE AIR EXCHANGE FROM
OUTSIDE,THUS HELP TO PROLONG THE EXTINGUISING
AGENT'S STAY IN THE CARGO HOLD FOR OBVIOUS
REASON.
SOME 737 CARGO PLANES PROCEDURES CALL FOR
BOTH PACKS OFF WITH A CAUTION NOTES SAYS:
DO NOT REPRESSURIZE SINCE FIRE RELATED STRUCTURAL DAMAGE MAY HAVE OCCURRED.THEN WHY
PAX PLANES LEAVE ONE PACK ON? I DON'T KNOW!
