AMC1 SPO.IDE.H.146 Lightweight flight recorder
ED Decision 2021/005/R
OPERATIONAL PERFORMANCE REQUIREMENTS
(a) If the flight recorder records flight data, it should record at least the following parameters:
(1) relative time count,
(2) pitch attitude or pitch rate,
(3) roll attitude or roll rate,
(4) heading (magnetic or true) or yaw rate,
(5) latitude,
(6) longitude,
(7) positioning system: estimated error (if available),
(8) pressure altitude or altitude from a positioning system,
(9) time,
(10) ground speed,
(11) positioning system: track (if available),
(12) normal acceleration,
(13) longitudinal acceleration, and
(14) lateral acceleration.
(b) If the flight recorder records images, it should capture views of the main instrument displays at the pilot station, or at both pilot stations when the helicopter is certified for operation with a minimum crew of two pilots. The recorded image quality should allow reading the following indications during most of the flight:
(1) magnetic or true heading,
(2) time (if presented on the front instrument panel),
(3) pressure altitude,
(4) indicated airspeed,
(5) vertical speed,
(6) slip,
(7) OAT,
(8) attitude (if displayed),
(9) stabilised heading (if displayed), and
(10) main rotor speed.
(c) If the flight recorder records a combination of images and flight data, each flight parameter listed in (a) should be recorded as flight data or by means of images.
(d) The flight parameters listed in (a), which are recorded as flight data, should meet the performance specifications (range, sampling intervals, accuracy limits and resolution in read-out) as defined in the relevant table of EUROCAE Document ED-112 ‘Minimum Operational Performance Specification for Crash Protected Airborne Recorder Systems’, dated March 2003, or EUROCAE Document ED-155 ‘Minimum Operational Performance Specification for Lightweight Flight Recording Systems’, dated July 2009, or any later equivalent standard accepted by EASA.
(e) The operational performance requirements for the flight recorder should be those laid down in:
(1) EUROCAE Document ED-155 or any later equivalent standard accepted by EASA for lightweight flight recorders; or
(2) EUROCAE Document ED-112 or any later equivalent standard accepted by EASA for crash-protected flight recorders.
EASA regulations mandate lightweight flight recorders on certain aircraft to capture crucial flight data like altitude, speed, acceleration, and position. If recording images, cockpit instrument displays must be visible, showing heading, altitude, airspeed, and other key parameters. Data and images must meet EUROCAE ED-112 or ED-155 standards for performance.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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