KPHX Phoenix Sky Harbor — Instrument Checkride Guide

What airspace and environment define KPHX?

KPHX is the towered primary airport within Phoenix Class B airspace, which extends from the surface to 12,000 feet MSL in its core shelf. Operating at KPHX requires an explicit ATC clearance into Class B and an operable Mode C transponder per 14 CFR 91.131. Phoenix Approach Control (TRACON P50) handles arrivals and departures before handoff to the control tower.

Phoenix Sky Harbor handles more than 40 million passengers annually and ranks among the busiest airports in the southwestern United States. The surrounding airspace is dense, with satellite fields including Chandler Municipal (KCHD), Phoenix Deer Valley (KDVT), and Scottsdale (KSDL) all operating under the KPHX TRACON. IFR departures and arrivals routinely share the Phoenix Class B environment with heavy commercial traffic, making situational awareness and crisp ATC communications essential.

What instrument approaches are published at KPHX?

KPHX has published ILS, LOC, and RNAV(GPS) approaches serving its parallel runway system. ILS approaches are published for Runways 7L, 7R, 25L, and 25R, providing Cat I precision guidance to each east-facing and west-facing runway end. LOC approaches cover additional runway configurations for backup non-precision guidance. RNAV(GPS) approaches with LPV, LNAV/VNAV, and LNAV minima serve all active runway ends.

Always verify minimums on the current FAA-issued plate from FAA Aeronav d-TPP. Approach minimums change with each AIRAC cycle and the values above are illustrative only.

What is the runway configuration at KPHX?

KPHX has 3 parallel east/west runways according to AirNav airport data: Runways 7L/25R, 7R/25L, and 8/26. The dominant flow direction depends on prevailing winds. Phoenix typically operates with a westerly departure flow in the afternoon due to heating-driven winds, placing arrivals on east-facing (Runway 7) configurations during morning hours and west-facing (Runway 25) configurations as winds shift. IFR arrivals are assigned by the approach controller based on the active landing runway.

The parallel runway structure means simultaneous ILS approaches are possible under specific ATC authorization. Instrument students should understand that ATC may sequence arrivals to multiple parallel runways and that LAHSO (Land and Hold Short) operations can be in effect, though LAHSO is not permitted when visibility is below 3 statute miles per AIM 4-3-11.

What weather patterns define IFR operations at KPHX?

Phoenix's desert climate means true low IMC — ceilings below 1,000 feet with visibility under 3 miles — is rare. Most IFR practice at KPHX and satellite fields occurs under an FAA-approved view-limiting device in VMC. However, four hazardous weather phenomena define instrument operations in the Phoenix area:

• Haboobs (dust storms): From June through September, outflow boundaries from dying thunderstorm cells can produce towering walls of wind-blown dust and sand. Surface visibility can drop to near zero within minutes with little warning, creating near-zero visibility IMC at low altitudes. The AIM Section 7-1-25 addresses dust and sandstorm awareness for pilots.
• Monsoon thunderstorms (July–September): Arizona's North American Monsoon produces afternoon and evening convective storms with rapid development. Embedded thunderstorms can be difficult to detect visually, making onboard weather radar or ADS-B weather essential. The FAA Aviation Weather Handbook (FAA-H-8083-28) covers convective avoidance techniques in Chapter 18.
• High density altitude: Summer temperatures routinely exceed 105°F (41°C) at Phoenix. At KPHX's field elevation of 1,135 feet MSL, an OAT of 105°F produces a density altitude above 4,000 feet MSL — degrading climb performance on missed approaches and departures for non-turbocharged piston aircraft.
• Wildfire smoke (fall): Arizona and adjacent states experience seasonal wildfires, particularly September through November. Smoke can reduce visibility below VFR minima and create haze layers that make VMC/IMC determination and terrain avoidance more difficult during circling approaches.

What should you expect on an instrument checkride at KPHX?

An instrument checkride in the Phoenix area presents a unique combination of factors that rarely occurs simultaneously at most U.S. airports. Understanding these distinctions will prepare you for both the oral and flight portions of the Instrument Rating ACS (FAA-S-ACS-8).

Density altitude is an oral exam topic, not just a performance concern. At KPHX in summer, your DPE will ask you to calculate density altitude during preflight planning and explain how it affects missed approach climb gradient requirements. If your aircraft's POH missed approach climb gradient assumes sea-level density altitude, you must demonstrate awareness that actual climb performance is degraded — and explain the decision point for recognizing when a missed approach is unsafe to execute. This ties directly to ACS Area II (Preflight Planning) and Area VI (Instrument Approach Procedures) risk management elements.

Checkride flights typically occur in VMC under a view-limiting device. Because true low IMC is rare in Phoenix, your DPE will evaluate IFR proficiency using a hood or foggles rather than actual IMC. You must fly all approaches to the published minimums under simulated instrument conditions, which means the safety pilot role and the sterile cockpit below 10,000 feet AGL both apply. Your DPE will be evaluating whether you transition correctly between instrument scan and visual acquisition at the DA or MDA.

Monsoon thunderstorm avoidance is a planning topic. If your checkride is scheduled during July, August, or September, expect the DPE to present a scenario with afternoon convective activity along your route. You must demonstrate the ability to interpret a convective SIGMET (WST), identify embedded cells on ADS-B weather or radar, and make a go/no-go or divert decision using ADM (Aeronautical Decision-Making) principles per ACS Area I risk management requirements. Simply identifying the SIGMET is not enough — you must explain the operational decision you would make and why.

Dust storm awareness is a situational awareness test. A well-prepared KPHX examiner candidate understands that haboobs can arrive with minimal ATC or ATIS warning, particularly in the period between observation cycles. Knowing the indicators of approaching blowing dust — a brown or red wall on the horizon, rapid wind shifts, PIREP activity — and knowing to immediately request ATC vectors to an alternate or hold until conditions improve demonstrates the judgment the ACS expects under risk management.

Class B clearances and ATC communications will be evaluated. Expect the DPE to include at least one scenario involving Class B airspace entry, a departure clearance from KPHX, or a transition through the Phoenix Bravo. You must correctly read back clearances, use standard phraseology, and demonstrate understanding that an IFR clearance into a Class B airport constitutes the required Class B clearance per 14 CFR 91.131.

Practice Questions

1. You are established on the ILS Runway 25L approach at KPHX. The OAT is 110°F and field elevation is 1,135 feet MSL. Calculate the approximate density altitude and explain how it affects your missed approach climb performance.

2. A convective SIGMET is issued covering the Phoenix area from 1800Z to 2000Z. Your checkride departs at 1730Z. What is a convective SIGMET, what weather does it indicate, and what action do you take?

3. While on final approach at KPHX, ATIS updates to report a haboob 10 miles east moving westbound at 30 knots. You are 5 miles from the runway at 3,000 feet MSL. Walk through your decision-making process.

4. ATC clears you: "Cessna 123AB, cleared ILS Runway 25L approach, maintain 5,000 until established, cross FLYIN at or above 4,000." What does "established" mean for descent purposes, and what does "at or above 4,000" require at the fix?

5. You are flying a LOC Runway 7R approach at KPHX. At the MDA, you have the approach lights in sight but not the runway environment. May you descend below MDA? What must you acquire before descending further, per 14 CFR 91.175(c)?