What defines an NALS approach lighting system?

An NALS approach lighting system is defined as any other approach lighting system (HIALS, MALS or ALS) less than 210 m or no approach lights.

What FAA lighting systems correspond to ICAO's IALS classification?

FAA lighting systems that correspond to ICAO's IALS classification include MALSF, MALS, SALS/SALSF, SSALF, SSALS, featuring high or medium intensity and/or flashing lights, within the 420-719 m range.

What are the length specifications for BALS approach lighting systems?

BALS approach lighting systems range from 210-419 m for HIALS, MALS or ALS.

What is the acceptable length for a CAT I lighting system (HIALS) according to ICAO standards?

According to ICAO, a CAT I lighting system (HIALS) should be ≥ 720 m.

What FAA lighting systems are considered BALS?

FAA considers ODALS, high or medium intensity or flashing lights within the 210-419 m range as BALS.

What defines an IALS approach lighting system according to ICAO?

ICAO defines an IALS approach lighting system as a simple approach lighting system (HIALS) between 420-719 m, using a single source, barrette.

What FAA approach lighting systems are equivalent to ICAO's FALS?

FAA equivalents to ICAO's FALS include ALSF1, ALSF2, SSALR, MALSR, which feature high or medium intensity and/or flashing lights, and extend 720 m or more.

GM2 CAT.OP.MPA.110 Aerodrome operating minima

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ED Decision 2022/012/R

APPROACH LIGHTING SYSTEMS — ICAO, FAA

The following table provides a comparison of ICAO and FAA specifications.

Table 19

Approach lighting systems — ICAO and FAA specifications

Class of lighting facility	Length, configuration and intensity of approach lights
FALS	ICAO: CAT I lighting system (HIALS ≥ 720 m) distance coded centre line, barrette centre line FAA: ALSF1, ALSF2, SSALR, MALSR, high or medium intensity and/or flashing lights, 720 m or more
IALS	ICAO: simple approach lighting system (HIALS 420–719 m) single source, barrette FAA: MALSF, MALS, SALS/SALSF, SSALF, SSALS, high or medium intensity and/or flashing lights, 420–719 m
BALS	Any other approach lighting system (HIALS, MALS or ALS 210–419 m) FAA: ODALS, high or medium intensity or flashing lights 210–419 m
NALS	Any other approach lighting system (HIALS, MALS or ALS <210 m) or no approach lights

Details

Source-Title: GM2 CAT.OP.MPA.110 Aerodrome operating minima View latest amendments

Erulesid: ERULES-1963177438-12533 Compare versions

Domain: Air operations

Applicabilitydate: 30 October, 2022

Entryintoforcedate: 1 July, 2022

Regulatorysource: ED Decision 2022/012/R Navigate

Regulatorysubject: Part-CAT

Typeofcontent: GM to IR (Guidance material to implementing rule)

Parentir: CAT.OP.MPA.110 Aerodrome operating minima

Origin: EASA

Category: EAR