Air carrier changing to the wrong frequency was issued a climb only to discover later the climb was ...

Narrative:

In cruise at FL330 we were given a frequency change to 132.22. I inadvertently dialed in 133.22. When checking in with the next controller we were given and read back a climb to FL350. Shortly there after we were given a frequency change to 132.22. When checking in with the controller we were given a descent to FL340 and queried our last assigned altitude. We were instructed to call center upon arrival. The flight continued to our destination and arrived normally. After landing; I contacted center who informed me that we had contacted center on 133.22 in error. What we did not hear was aircraft Y check on seconds before. The controller inadvertently assigned aircraft X FL350 instead of aircraft Y. We had checked onto the wrong frequency at precisely the wrong time. Suggestions; if a clearance seems odd; you should question ATC about the clearance.

Original NASA ASRS Text

Title: Air Carrier changing to the wrong frequency was issued a climb only to discover later the climb was for a company aircraft with a similar flight number.

Narrative: In cruise at FL330 we were given a frequency change to 132.22. I inadvertently dialed in 133.22. When checking in with the next controller we were given and read back a climb to FL350. Shortly there after we were given a frequency change to 132.22. When checking in with the controller we were given a descent to FL340 and queried our last assigned altitude. We were instructed to call Center upon arrival. The Flight continued to our destination and arrived normally. After landing; I contacted Center who informed me that we had contacted Center on 133.22 in error. What we did not hear was Aircraft Y check on seconds before. The controller inadvertently assigned Aircraft X FL350 instead of Aircraft Y. We had checked onto the wrong frequency at precisely the wrong time. Suggestions; if a clearance seems odd; you should question ATC about the clearance.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	973407
Time
Date	201110
Place
Locale Reference	ZAU.ARTCC
State Reference	IL
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Captain
Person 2
Function	First Officer
Events
Anomaly	Deviation - Procedural Clearance

Air carrier changing to the wrong frequency was issued a climb only to discover later the climb was for a company aircraft with a similar flight number.