KBOS Boston Logan — Instrument Checkride Guide

What kind of airport is KBOS and what is its IFR environment?

General Edward Lawrence Logan International Airport (KBOS) sits on a peninsula in Boston Harbor, 2.5 nm east of downtown Boston. Elevation is 19 ft MSL. The airport operates under continuous ATC coverage and is surrounded by Class B airspace that extends from the surface to 7,000 ft MSL in its core shelf. Boston Approach Control manages arrivals and departures on multiple sectors — primary approach is 118.25 MHz, with north, west, and south sector frequencies at 120.6 and 127.2 MHz.

KBOS handles commercial airline traffic continuously, which means IFR-equipped general aviation aircraft operating there are sequenced alongside regional jets and heavy transports. ARTCC handoffs come from Boston Center (ZBW). Clearance delivery is on 121.65 MHz; ATIS broadcasts continuously on 135.0 MHz.

What instrument approaches are published at KBOS?

KBOS has one of the most extensive published approach suites of any northeastern airport, sourced from AirNav and verified against current SkyVector chart listings.

Always verify current minima on official FAA charts — KBOS approaches are amended periodically. LOC-only minima are published separately from the ILS line and carry higher decision altitudes and reduced visibility requirements.

What is the runway configuration at KBOS?

KBOS operates 6 runways. The two primary instrument runways — 15R/33L and 04R/22L — each exceed 10,000 ft and support heavy aircraft. Runway 14/32 (5,000 ft) and 15L/33R (2,557 ft) are used primarily for commuter and general aviation traffic; the short runway 15L/33R has no published instrument approach.

Active runway configuration depends on wind and traffic flow. Runway 33L is the preferred arrival runway with northwest winds; 04R is preferred with southeast flow. ATC publishes NOTAMs when runway construction or closures alter the normal configuration.

What weather should instrument pilots expect at KBOS?

Boston Logan's coastal position on Massachusetts Bay makes it one of the foggier major airports in New England. Marine fog advects onshore whenever warm moist air moves over cold nearshore waters — most common from April through July — and can drop ceilings to 200–300 ft with visibilities below 1 mile during spring and early summer nights.

Nor'easter snow events are a significant hazard from November through March. These systems can deliver 6–24 inches of snow over 12–24 hours with sustained northeast winds, low ceilings, and blowing snow that reduces visibility to near zero. Expect runway closures, deicing delays, and approach minimums during major events. The National Weather Service Boston/Norton (BOX) office issues terminal aerodrome forecasts and special weather statements for KBOS.

Summer afternoon and evening convective activity builds inland over southern New England and can affect eastbound departure routes. KBOS itself rarely sees severe thunderstorms directly, but pop-up cells east of the Connecticut River valley frequently cause ground delays and rerouting for arrivals from the west.

Winter inversions common along the New England coast can produce icing conditions from the surface to FL180, particularly during warming trends after cold frontal passage. Pilots operating in the KBOS terminal area should always obtain a thorough weather briefing including PIREPs from Boston Center frequencies.

What should you expect on an instrument checkride at KBOS?

Flying an instrument checkride into KBOS is a fundamentally different experience from a checkride at a Class D reliever airport — and that difference begins before you leave the ground. The Boston terminal area operates at airline pace. ATC expects precise readbacks, immediate compliance with altitude and heading assignments, and no hesitation on frequency changes. Controllers do not repeat instructions on first call; if you miss a clearance, you are expected to ask for it again promptly and professionally. The DPE is watching how you manage communication load under pressure, not just whether you can fly a needle.

Expect a full Class B departure clearance with an initial altitude restriction that may be well below your cruise altitude — a standard feature of the Logan departure environment. The DPE may assign you a specific departure procedure or ask you to pull up a RNAV departure from the chart. Knowing how to read a departure procedure and brief it aloud in 60 seconds is an evaluable skill under ACS Area V.

On the arrival side, Boston Approach will sequence you into a stream of airline traffic. Expect radar vectors to final that result in an intercept well outside the FAF. The DPE will be evaluating whether you maintain instrument scan during vectors, configure the aircraft appropriately, and brief the approach while simultaneously following ATC instructions. A common DPE technique at busy airports is to give the pilot a new clearance — a hold, a heading change, or an altitude amendment — at the exact moment the pilot would naturally be heads-down on the approach plate. This is intentional. It tests task management, not just instrument skill.

The ILS RWY 33L and ILS RWY 04R are the DPE-favored approaches at KBOS given their length, precision guidance, and CAT I availability for typical checkride weather. If you are flying a glass cockpit aircraft, expect the examiner to ask you to demonstrate the raw-data ILS using only the CDI and altimeter — a core competency under ACS Task VI.B.

Missed approach execution at KBOS requires immediate compliance with published missed approach instructions and a prompt call to approach control — delays in either will generate a traffic conflict with the airline behind you. The DPE will note whether your missed approach is immediate and whether you declare "missed approach" on frequency without prompting. Under 14 CFR 91.175(e), once you descend below MDA or DA, a missed approach is mandatory if you lose the required visual references.

Finally, expect holding. Boston Approach holds GA aircraft frequently during wave traffic. The DPE may ask ATC for a published hold or issue a non-published hold over a fix on the approach. Entry procedure, EFC time requests, and timing are all evaluated. Prepare to brief a hold entry from an odd arrival heading without referencing a textbook.

Practice Questions

1. You are on a 270-degree heading inbound for the ILS RWY 33L at KBOS when approach amends your altitude to 3,000 feet and gives you a speed restriction of 180 knots. What do you do first, and what ACS task does this evaluate?

2. KBOS Approach clears you for the RNAV (GPS) RWY 04L approach. Your avionics show LPV guidance available. How does LPV differ from ILS guidance, and what visibility and DA would you expect compared to the LNAV line of minima?

3. On the ILS RWY 04R, you break out of the clouds at 400 ft AGL and see only the approach lighting system — no runway environment. Under 14 CFR 91.175(c), how low can you descend using approach lights alone?

4. You are given a hold at BOSOX intersection on the ILS RWY 22L approach, expect further clearance in 15 minutes. What information must you obtain and what actions do you take if you do not receive an EFC update within that window?

5. After a missed approach on the LOC RWY 33L, Boston Approach asks your intentions. You have the fuel and the alternate. Walk the DPE through your decision process for requesting a second approach versus proceeding to your alternate.

Frequently Asked Questions

Q: What instrument approaches are published at KBOS?

KBOS has ILS or LOC approaches to runways 04R, 15R, 22L, 27, and 33L. Runways 04R and 33L are certified for CAT II/III operations. RNAV (GPS) approaches serve runways 04L, 04R, 15R, 22L (X and Y variants), 27, 32, and 33L (Z variant). An RNAV (RNP) procedure is also published for runway 33L.

Q: What is the airspace class at Boston Logan?

KBOS sits at the center of Class B airspace. Under 14 CFR 91.131, an explicit ATC clearance is required before entering Class B airspace. On an IFR clearance in the Boston terminal area, that clearance is embedded in the departure or approach sequence — you do not request it separately.

Q: Can a student pilot fly an instrument checkride at KBOS?

A checkride is not a training flight — the applicant holds a temporary certificate after passing. However, the practical test itself is conducted under Part 61 with a DPE. High traffic volume and complex ATC sequencing at KBOS makes it a demanding checkride environment; many DPEs use nearby reliever airports for portions of the flight test.

Q: What runways at KBOS are used most often for ILS approaches?

Runway 33L (10,083 ft) and 04R (10,006 ft) are the primary instrument runways at KBOS and receive the heaviest ILS traffic. Both hold CAT II/III certifications. ATC configuration depends on wind — 33L is favored with northwest flow and 04R with southeast flow.

Q: What is the ATIS frequency at KBOS?

KBOS ATIS broadcasts on 135.0 MHz for both arrivals and departures. Boston Approach operates on 118.25 MHz (primary), with additional sectors on 120.6 and 127.2. Clearance delivery is on 121.65 MHz.

Q: What weather hazards should instrument pilots expect at KBOS?

Boston Logan's coastal location produces marine fog and low ceilings year-round, with the highest frequency in spring and summer. Nor'easter snow events from November through March can drop ceilings to minimums or close the airport. Summer afternoons bring convective activity inland that affects departure routing.

Q: Does KBOS have RNAV approaches with LPV minimums?

Yes. Several KBOS RNAV (GPS) procedures publish LPV lines of minima, which provide vertically guided guidance similar to a precision approach. LPV minimums are typically lower than LNAV/VNAV lines, but the exact DH and visibility requirements vary by runway — always verify current minima on the official FAA chart before flight.

Sources

• AirNav — KBOS Airport Information
• SkyVector — KBOS Instrument Approach Procedures
• 14 CFR 91.131 — Operations in Class B Airspace (Cornell LII)
• 14 CFR 91.175 — Takeoff and Landing Under IFR (Cornell LII)
• FAA Instrument Flying Handbook FAA-H-8083-15B
• NWS Boston/Norton (BOX) — Terminal Forecasts

This article was researched from FAA primary sources (ACS, FAR/AIM, Advisory Circulars, Instrument Flying Handbook), approach procedure data from AirNav and SkyVector, and citing current 14 CFR Part 91 — drafted by MockDPE. Last updated: May 2026. If you spot an inaccuracy, email corrections@mockdpe.org.