F100 flight crew descend out of msp class B airspace and are advised by M98 controller.

Attributes
ACN	497740
Time
Date	200101
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : msp.airport
State Reference	MN
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tracon : m98.tracon
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	497740
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	airspace violation : exit non adherence : published procedure non adherence : far non adherence : company policies
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued advisory flight crew : returned to intended or assigned course
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Company Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During descent into msp, WX clear and 10 mi visibility, copilot was flying. We called airport in sight at 12 mi. Approach control gave us a visual approach clearance to runway 30R. The copilot set the final approach altitude in the altitude window and began descending to that altitude. The approach controller informed us we had gone below the class B airspace limit and should climb back up. He said he would not file a violation on us. I was not aware of the rule and could not find it clearly written in part 1. Upon review of my aim when I got home, I found the restr in part 97. My aim was 12 yrs old, so it may be in a different place now. I would recommend a clear statement in part 1 advising of this restr.

Original NASA ASRS Text

Title: F100 FLC DSND OUT OF MSP CLASS B AIRSPACE AND ARE ADVISED BY M98 CTLR.

Narrative: DURING DSCNT INTO MSP, WX CLR AND 10 MI VISIBILITY, COPLT WAS FLYING. WE CALLED ARPT IN SIGHT AT 12 MI. APCH CTL GAVE US A VISUAL APCH CLRNC TO RWY 30R. THE COPLT SET THE FINAL APCH ALT IN THE ALT WINDOW AND BEGAN DSNDING TO THAT ALT. THE APCH CTLR INFORMED US WE HAD GONE BELOW THE CLASS B AIRSPACE LIMIT AND SHOULD CLB BACK UP. HE SAID HE WOULD NOT FILE A VIOLATION ON US. I WAS NOT AWARE OF THE RULE AND COULD NOT FIND IT CLRLY WRITTEN IN PART 1. UPON REVIEW OF MY AIM WHEN I GOT HOME, I FOUND THE RESTR IN PART 97. MY AIM WAS 12 YRS OLD, SO IT MAY BE IN A DIFFERENT PLACE NOW. I WOULD RECOMMEND A CLR STATEMENT IN PART 1 ADVISING OF THIS RESTR.

Data retrieved from NASA's ASRS site as of July 2007 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.