A general aviation instructor pilot reported noticing that the cjr RNAV 22 approach could; if flown ...

Narrative:

During a practice instrument approach (RNAV 22) at culpepper airport (cjr) in VFR conditions; I noted that the depicted course reversal at the doyat IAF at the published initial approach altitude (3000 ft MSL) would appear to result in an incursion into the class B airspace 2500 altitude floor if one complied with the 4 NM course reversal required by the published approach procedure. While the doyat intersection lies below the 4500 foot class B floor; the required course reversal appears to result in an incursion into the 2500 foot ring. Upon noting the upcoming incursion; I believe that I was able to avoid the incursion by flying a 3 mile course reversal pattern rather than the depicted 4 mile pattern but it was certainly close to the 2500 foot boundary. I recommend that the depicted course reversal leg be shortened or the approach procedure amended to require obtaining a class B clearance prior to executing this procedure to avoid a possible class B infraction. Most students are more focused on executing the published procedure than figuring out that the depicted procedure could result in a class B infraction. While I do not think that an incursion occurred; the resolution of the onboard avionics display cannot with absolute certainty guarantee this especially if the 4 mile reversal is flown.

Original NASA ASRS Text

Title: A general aviation instructor pilot reported noticing that the CJR RNAV 22 approach could; if flown as depicted; possibly intrude on the IAD Class B airspace. Reporter recommended an adjustment to the procedure turn to preclude a possible airspace violation.

Narrative: During a practice instrument approach (RNAV 22) at Culpepper Airport (CJR) in VFR conditions; I noted that the depicted course reversal at the DOYAT IAF at the published initial approach altitude (3000 ft MSL) would appear to result in an incursion into the class B airspace 2500 altitude floor if one complied with the 4 NM course reversal required by the published approach procedure. While the DOYAT intersection lies below the 4500 foot class B floor; the required course reversal appears to result in an incursion into the 2500 foot ring. Upon noting the upcoming incursion; I believe that I was able to avoid the incursion by flying a 3 mile course reversal pattern rather than the depicted 4 mile pattern but it was certainly close to the 2500 foot boundary. I recommend that the depicted course reversal leg be shortened or the approach procedure amended to require obtaining a class B clearance prior to executing this procedure to avoid a possible class B infraction. Most students are more focused on executing the published procedure than figuring out that the depicted procedure could result in a class B infraction. While I do not think that an incursion occurred; the resolution of the onboard avionics display cannot with absolute certainty guarantee this especially if the 4 mile reversal is flown.

Data retrieved from NASA's ASRS site 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	1410139
Time
Date	201612
Local Time Of Day	1201-1800
Place
Locale Reference	CJR.Airport
State Reference	VA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Other RNAV Runway 22
Flight Plan	None
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 10000 Flight Crew Type 3000
Events
Anomaly	Deviation - Procedural FAR Deviation - Procedural Published Material / Policy

A general aviation instructor pilot reported noticing that the cjr RNAV 22 approach could; if flown as depicted; possibly intrude on the iad class B airspace. Reporter recommended an adjustment to the procedure turn to preclude a possible airspace violation.