FDM-025Initial climb & climb

Excessive bank in initial climb

Bank angle or roll rate exceeds the validated low-height monitoring context after takeoff.

4Signal groups
1Flight phases
6Safety topics
12Reading links

What the profile screens for

Bank angle or roll rate exceeds the validated low-height monitoring context after takeoff.

Why it matters

High bank close to the ground reduces vertical lift and terrain margin while increasing upset and directional exposure.

Flight-phase contextInitial Climb
Risk lensesAircraft upset / loss of controlTerrain collision / CFIT

Build the event around relationships—not one number.

01 · Gate

Define the operating context

Identify the initial climb state, aircraft configuration, location, and any required external data before applying logic.

02 · Detect

Screen the signal relationship

Use validated combinations of roll angle, roll rate, radio altitude; avoid treating one isolated value as the whole event.

03 · Validate

Confirm it is a genuine event

Check polarity, units, source, recording rate, dropouts, air/ground logic, persistence, and false-positive mechanisms.

04 · Contextualise

Connect data to the safety question

Review procedures, reports, weather, airport and traffic context, exposure, recurrence, and the strength of the related barriers.

Recorded signals that may help explain the event.

roll angleroll rateradio altitudeheading

Questions before conclusions

  1. Q1

    Are roll angle, roll rate, radio altitude valid, correctly decoded, time-aligned, and sampled well enough for this event?

  2. Q2

    What changed immediately before, during, and after the excessive bank in initial climb indication?

  3. Q3

    How do aircraft configuration, weather, airport geometry, automation state, and crew reports change the interpretation?

  4. Q4

    Which current flight manual, SOP, maintenance, or operator event definition controls the final conclusion?

Safety topics that broaden the event review.

Topic atlas3 operational connections
Deep briefs3 detailed research guides

12 useful starting points

Terminology and topic relationships select these links; the publisher source remains authoritative.

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EASA

Easy Access Rules for Air Operations — ORO.AOC.130

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EASA / EOFDM

European Operators Flight Data Monitoring forum

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FAA

AC 120-82 — Flight Operational Quality Assurance

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ICAO

Doc 10000 — Manual on Flight Data Analysis Programmes

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