Figure 227: ILS or LOC RWY 35R, Centennial (APA)
FAA-CT-8080-3F · Instrument Rating supplement · asked on the Instrument Rating test
3 FAA questions that refer to this figure
Question 1 · Instrument Rating
(Refer to FAA-CT-8080-3F, Figure 227.) Refer to the APA (Centennial) ILS RWY 35R procedure. The PFAF (Precision Final Approach Fix) intercept altitude is
- A.7,080 feet MSL.
- B.7,977 feet MSL.
- C.8,000 feet MSL.
Show answer and explanation
Correct: C. 8,000 feet MSL.
In the profile view of the APA ILS RWY 35R chart (Figure 227), the lightning-bolt symbol marking glideslope intercept points to the underlined altitude 8000, just outside the LOM (CASSE, I-APA 8.1 DME). On a precision approach the final approach fix is the point where the glideslope is intercepted at that altitude, so the PFAF intercept altitude is 8,000 feet MSL. The 7977 shown at the LOM is the glideslope altitude when crossing the marker, and 7080 is the localizer-only minimum altitude after LECET.
Open this question’s pageQuestion 2 · Instrument Rating
(Refer to FAA-CT-8080-3F, Figure 227.) The ILS RWY 35R procedure at APA depicts a symbol on the plan view that represents a minimum safe altitude sector within 25 NM of
- A.CASSE NDB/LOM.
- B.the FIRPI intersection.
- C.the I-APA Localizer.
Show answer and explanation
Correct: A. CASSE NDB/LOM.
The Figure 227 MSA circle is labeled 'MSA AP 25 NM': AP is the identifier of the CASSE LOM (260 AP), so the minimum safe altitude sectors are centered on the CASSE NDB/LOM. The localizer identifier is I-APA and FIRPI is a fix, not the MSA center.
Open this question’s pageQuestion 3 · Instrument Rating
(Refer to FAA-CT-8080-3F, Figure 227.) You are executing the Centennial Airport (APA) ILS RWY 35R approach. What is your crossing altitude at the outer marker?
- A.2,092 feet MSL.
- B.7,977 feet MSL.
- C.8,000 feet MSL.
Show answer and explanation
Correct: B. 7,977 feet MSL.
The APA ILS RWY 35R profile shows the glide slope crossing the CASSE outer marker at 7,977 feet MSL. 8,000 feet is the minimum altitude at the fix for the localizer-only approach, and 2,092 feet is not on the chart.
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