Narrative:

On climb; out of cvg; we received a stabilizer trim and mach trim caution message. We followed the QRH which told us to re-engage both the stabilizer and mach trims. We called maintenance control and told them of the problem and they advised us to return to cvg. During the return to cvg; the messages came back. We tried to re-engage them but it would not work. We then read the QRH again and was confused by the new procedure and the new layout. The new revisions show several arrows which are complicated to follow; so the captain again called maintenance. He told him again of the situation and told him that we were having difficulties following the procedure. Another person then started talking to us and the captain explained again the entire situation. This time the supervisor told us to do a normal flaps 45 degree landing; and to follow the QRH to the best of our ability. We again consulted the QRH and followed the arrows to the bottom of '8-13' which took us to a 'no' but did not give further direction. So we took the advice of maintenance and proceeded back to cvg for a normal landing. We landed without incident and decided to once again look at the QRH without all of the distrs of earlier. After looking at the QRH; we are unsure if we followed it correctly prior to landing. The captain called maintenance to discuss the procedure once on the ground and found out that they did not have the same revision as in the aircraft. He also called the chief pilot and he also had the old revision. The old revision clearly states to do a flaps 20 degree landing; but the new procedure is confusing and does not lead you in the same direction. We landed flaps 45 degrees; not flaps 20 degrees; and feel that it would have helped for all sources to have the same revision; therefore; making it easier to come to the correct conclusion.

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Original NASA ASRS Text

Title: CRJ200 CREW RECEIVES STABILIZER TRIM AND MACH TRIM CAUTION MESSAGE AND RETURNS TO FIELD.

Narrative: ON CLB; OUT OF CVG; WE RECEIVED A STABILIZER TRIM AND MACH TRIM CAUTION MESSAGE. WE FOLLOWED THE QRH WHICH TOLD US TO RE-ENGAGE BOTH THE STABILIZER AND MACH TRIMS. WE CALLED MAINT CTL AND TOLD THEM OF THE PROB AND THEY ADVISED US TO RETURN TO CVG. DURING THE RETURN TO CVG; THE MESSAGES CAME BACK. WE TRIED TO RE-ENGAGE THEM BUT IT WOULD NOT WORK. WE THEN READ THE QRH AGAIN AND WAS CONFUSED BY THE NEW PROC AND THE NEW LAYOUT. THE NEW REVISIONS SHOW SEVERAL ARROWS WHICH ARE COMPLICATED TO FOLLOW; SO THE CAPT AGAIN CALLED MAINT. HE TOLD HIM AGAIN OF THE SITUATION AND TOLD HIM THAT WE WERE HAVING DIFFICULTIES FOLLOWING THE PROC. ANOTHER PERSON THEN STARTED TALKING TO US AND THE CAPT EXPLAINED AGAIN THE ENTIRE SITUATION. THIS TIME THE SUPVR TOLD US TO DO A NORMAL FLAPS 45 DEG LNDG; AND TO FOLLOW THE QRH TO THE BEST OF OUR ABILITY. WE AGAIN CONSULTED THE QRH AND FOLLOWED THE ARROWS TO THE BOTTOM OF '8-13' WHICH TOOK US TO A 'NO' BUT DID NOT GIVE FURTHER DIRECTION. SO WE TOOK THE ADVICE OF MAINT AND PROCEEDED BACK TO CVG FOR A NORMAL LNDG. WE LANDED WITHOUT INCIDENT AND DECIDED TO ONCE AGAIN LOOK AT THE QRH WITHOUT ALL OF THE DISTRS OF EARLIER. AFTER LOOKING AT THE QRH; WE ARE UNSURE IF WE FOLLOWED IT CORRECTLY PRIOR TO LNDG. THE CAPT CALLED MAINT TO DISCUSS THE PROC ONCE ON THE GND AND FOUND OUT THAT THEY DID NOT HAVE THE SAME REVISION AS IN THE ACFT. HE ALSO CALLED THE CHIEF PLT AND HE ALSO HAD THE OLD REVISION. THE OLD REVISION CLRLY STATES TO DO A FLAPS 20 DEG LNDG; BUT THE NEW PROC IS CONFUSING AND DOES NOT LEAD YOU IN THE SAME DIRECTION. WE LANDED FLAPS 45 DEGS; NOT FLAPS 20 DEGS; AND FEEL THAT IT WOULD HAVE HELPED FOR ALL SOURCES TO HAVE THE SAME REVISION; THEREFORE; MAKING IT EASIER TO COME TO THE CORRECT CONCLUSION.

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.