Wind and tailwind limits

Identify the runway

Use the actual runway intended for the simulated departure or arrival.

Read the weather

Note the reported wind direction, speed and gusts. Before comparing wind with runway heading, make sure both directions use the same true or magnetic reference.

Determine the components

Use the flight-planning tool or appropriate chart to identify headwind, tailwind and crosswind components.

Check the aircraft

The FSS limitations page gives a 15 kt maximum tailwind in its general list. The locally supplied E190/195 AFM lists a 10 kt maximum takeoff and landing tailwind in section 2-10, for the aircraft codes shown on PDF pages 73 and 79. These figures conflict if applied as a single universal rule. ^[L05]

Resolve applicability

The sources do not establish why the figures differ or which applies to every simulated variant. Check the exact FSS aircraft, version, configuration and relevant documentation; do not average the values.

Recalculate

Review the performance whenever the runway, reported wind or surface condition changes.

The supplied E175 QRH includes a wind-component table on PDF page 293. It is a real-aircraft reference for resolving the wind into components; use the applicable simulator aircraft and conditions when assessing the result ^{[L04, PDF p. 293]}.

In US surface observations, wind direction in a METAR uses true north; local wind reports for immediate use use magnetic north. Check the source before comparing either with a runway heading. FAA surface weather observing, sections 7.4 and 7.13 ^[221]. ^[10]