This exercise focuses on a fundament skill of an IFR pilot—the ability to take a written description of  a specified instrument flight procedure—consisting of little more than a sequential description of headings, altitudes, and speeds—and translate this into an actual flight-sequence profile that accurately conforms to the written description.  This ability to “translate” and fly such a sequence is fundamental to the safe and effective conduct of an instrument approach procedure.  This is the primary purpose of this exercise, but the exercise is also designed to enhance fundamental instrument procedures that combine VOR and ADF intercepts, tracking, timing, and flight-control skills.  For training purposes, this exercise is divided into four phases, which can be assigned individually or combined.

Phase One: Whatcom VOR Runway 25 Simulated Approach

From a position determined by your instructor, intercept the 160° track to the White Rock NDB.  A 90° intercept must be used.  After intercepting, climb to or maintain 1500’.


After crossing the White Rock NDB, track directly to the Whatcom VOR and descend to maintain 1200’.  Then complete pre-landing checks and reduce speed to 90 MPH with 10° flaps.


After crossing the Whatcom VOR, descend to 1000’1 and reduce speed to 80 MPH with 25° flaps.  Track out-bound on the 115° Radial for 45 seconds.  After 45 seconds, initiate a standard-rate turn to the left and intercept the 250° Track inbound.


After crossing the Whatcom VOR westbound, fly outbound on the 250° Radial for 1 minute, 20 seconds.  Simultaneously, descend to and maintain 500’ with the aircraft in its final approach configuration (69 MPH and 40° flaps).


When 1 minute, 20 seconds expires (referred to as the MissedApproachPoint), complete the following Missed Approach Procedure: climb outbound on the 250° Radial to 1000’, then continue in a left climbing turn to a heading of 205° and intercept the 230° Radial.  Maintain 1500’ or as assigned by the instructor.

Phase Two: White Rock Runway 25 Simulated Approach

Climb to or maintain 1500’ and proceed to intercept the 340° Track to the White Rock NDB, using a 90°-intercept angle.  Once established on the 340° Track, reduce speed to 90 MPH with 15° flaps.


Cross White Rock NDB and turn right to fly a heading of 025o for 45 seconds.  Reduce speed to 80 MPH with 25o flap, and descend to 1200’.  Then turn right to intercept the 250o Track to White Rock NDB.  After passing White Rock a second time, track outbound on the 250o Track for 2 minutes, 30 seconds and simultaneously descend to 900’.  Maintain 69 MPH with 40o flaps.  Take off your hood and determine your position.


Simulated Whatcom 25 and White Rock 34 Approaches, Langley Flying School.


1 Referred to as the Procedure Turn Altitude.


2 Referred to as the Minimum Descent Altitude.


3 Do not forget the post-takeoff and level checklist procedures.


4 This manoeuvre requires a clearance from Abbotsford Tower.