TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
SEQUENCED FLASHING LIGHTS [7 records]
Record 1 - internal organization data 2025-05-23
Record 1, English
Record 1, Subject field(s)
- Signalling and Illumination (Air Transport)
- Air Navigation Aids
Record 1, Main entry term, English
- omnidirectional approach lighting system
1, record 1, English, omnidirectional%20approach%20lighting%20system
correct, standardized
Record 1, Abbreviations, English
- ODALS 2, record 1, English, ODALS
correct, standardized
Record 1, Synonyms, English
- omni directional approach lighting system 3, record 1, English, omni%20directional%20approach%20lighting%20system
correct
- ODALS 4, record 1, English, ODALS
correct
- ODALS 4, record 1, English, ODALS
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A configuration of seven omnidirectional, variable-intensity, sequenced flashing white lights providing circling, offset and straight-in visual guidance for non-precision approach runways. 1, record 1, English, - omnidirectional%20approach%20lighting%20system
Record number: 1, Textual support number: 1 OBS
omnidirectional approach lighting system; ODALS: term, abbreviation and definition standardized by the Glossary for Pilots and Air Traffic Services Personnel Committee. 5, record 1, English, - omnidirectional%20approach%20lighting%20system
Record 1, French
Record 1, Domaine(s)
- Signalisation (Transport aérien)
- Aides à la navigation aérienne
Record 1, Main entry term, French
- dispositif lumineux d’approche omnidirectionnel
1, record 1, French, dispositif%20lumineux%20d%26rsquo%3Bapproche%20omnidirectionnel
correct, masculine noun, standardized
Record 1, Abbreviations, French
- ODALS 2, record 1, French, ODALS
correct, masculine noun, standardized
Record 1, Synonyms, French
- balisage lumineux d'approche omnidirectionnel 3, record 1, French, balisage%20lumineux%20d%27approche%20omnidirectionnel
correct, masculine noun
- ODALS 4, record 1, French, ODALS
correct, masculine noun
- ODALS 4, record 1, French, ODALS
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Système de balisage composé de sept feux blancs à éclats séquentiels omnidirectionnels et à intensité variable qui fournit un guidage visuel pour les approches indirectes, décalées et directes effectuées sur des pistes d'approche de non-précision. 1, record 1, French, - dispositif%20lumineux%20d%26rsquo%3Bapproche%20omnidirectionnel
Record number: 1, Textual support number: 1 OBS
dispositif lumineux d’approche omnidirectionnel; ODALS : terme, abréviation et définition normalisés par le Comité sur le Glossaire à l'intention des pilotes et du personnel des services de la circulation aérienne. 5, record 1, French, - dispositif%20lumineux%20d%26rsquo%3Bapproche%20omnidirectionnel
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2021-03-04
Record 2, English
Record 2, Subject field(s)
- Air Navigation Aids
- Aircraft Piloting and Navigation
Record 2, Main entry term, English
- approach lighting system with sequential flashers
1, record 2, English, approach%20lighting%20system%20with%20sequential%20flashers
correct
Record 2, Abbreviations, English
- ALSF 2, record 2, English, ALSF
correct
Record 2, Synonyms, English
- approach lighting system with sequenced flashing lights 3, record 2, English, approach%20lighting%20system%20with%20sequenced%20flashing%20lights
correct
- ALSF 3, record 2, English, ALSF
correct
- ALSF 3, record 2, English, ALSF
- approach lighting system with sequenced flashers 4, record 2, English, approach%20lighting%20system%20with%20sequenced%20flashers
correct
- ALSF 4, record 2, English, ALSF
correct
- ALSF 4, record 2, English, ALSF
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The ALSF consists of an array of light bars installed symmetrically about the approach lighting system centreline, starting at the approach threshold and extending a total distance of 2400 feet (731.52 m) outward into the approach zone up to 3000 feet (914.4 m) at facilities where high-speed military aircraft share runway usage. 4, record 2, English, - approach%20lighting%20system%20with%20sequential%20flashers
Record 2, French
Record 2, Domaine(s)
- Aides à la navigation aérienne
- Pilotage et navigation aérienne
Record 2, Main entry term, French
- balisage lumineux d'approche à feux séquentiels clignotants
1, record 2, French, balisage%20lumineux%20d%27approche%20%C3%A0%20feux%20s%C3%A9quentiels%20clignotants
correct, masculine noun
Record 2, Abbreviations, French
- ALSF 2, record 2, French, ALSF
correct, masculine noun
Record 2, Synonyms, French
- dispositif lumineux d'approche à feux séquentiels clignotants 3, record 2, French, dispositif%20lumineux%20d%27approche%20%C3%A0%20feux%20s%C3%A9quentiels%20clignotants
correct, masculine noun
- ALSF 3, record 2, French, ALSF
correct, masculine noun
- ALSF 3, record 2, French, ALSF
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2021-02-23
Record 3, English
Record 3, Subject field(s)
- Signalling and Illumination (Air Transport)
- Air Navigation Aids
Record 3, Main entry term, English
- simplified short approach light system with sequenced flashing lights
1, record 3, English, simplified%20short%20approach%20light%20system%20with%20sequenced%20flashing%20lights
correct
Record 3, Abbreviations, English
- SSALF 1, record 3, English, SSALF
correct
Record 3, Synonyms, English
- simplified short approach lighting system with sequenced flashers 2, record 3, English, simplified%20short%20approach%20lighting%20system%20with%20sequenced%20flashers
correct
- SSALF 2, record 3, English, SSALF
correct
- SSALF 2, record 3, English, SSALF
- short simplified approach lighting system with sequenced flashers 3, record 3, English, short%20simplified%20approach%20lighting%20system%20with%20sequenced%20flashers
correct
- SSALF 4, record 3, English, SSALF
correct
- SSALF 4, record 3, English, SSALF
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Simplified short approach light system with sequenced flashing lights(SSALF) is the same as SSALR [simplified short approach lighting system with runway alignment indicator lights] but instead uses sequenced flashing lights. 1, record 3, English, - simplified%20short%20approach%20light%20system%20with%20sequenced%20flashing%20lights
Record 3, French
Record 3, Domaine(s)
- Signalisation (Transport aérien)
- Aides à la navigation aérienne
Record 3, Main entry term, French
- balisage lumineux simplifié d'approche courte avec feux clignotants séquencés
1, record 3, French, balisage%20lumineux%20simplifi%C3%A9%20d%27approche%20courte%20avec%20feux%20clignotants%20s%C3%A9quenc%C3%A9s
correct, masculine noun
Record 3, Abbreviations, French
- SSALF 2, record 3, French, SSALF
correct, masculine noun
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2015-03-17
Record 4, English
Record 4, Subject field(s)
- Signalling and Illumination (Air Transport)
- Airport Runways and Areas
Record 4, Main entry term, English
- sequenced flashing capacitor discharge lights
1, record 4, English, sequenced%20flashing%20capacitor%20discharge%20lights
plural
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, French
Record 4, Domaine(s)
- Signalisation (Transport aérien)
- Pistes et aires d'aéroport
Record 4, Main entry term, French
- feux à éclats séquentiels à décharge de condensateur
1, record 4, French, feux%20%C3%A0%20%C3%A9clats%20s%C3%A9quentiels%20%C3%A0%20d%C3%A9charge%20de%20condensateur
masculine noun, plural
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2013-11-28
Record 5, English
Record 5, Subject field(s)
- Signalling and Illumination (Air Transport)
- Air Navigation Aids
Record 5, Main entry term, English
- medium intensity approach lighting system with sequenced flashing lights
1, record 5, English, medium%20intensity%20approach%20lighting%20system%20with%20sequenced%20flashing%20lights
correct
Record 5, Abbreviations, English
- MALSF 1, record 5, English, MALSF
correct
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Medium Intensity Approach Lighting System with Sequenced Flashing Lights(MALSF) : This system consists of seven bars of variable-intensity lights spaced 60 mapart for 420 m commencing at 60 m from the threshold. The three bars farthest away from the threshold contain a sequenced flashing light unit. These lights flashsequentially towards the threshold, repeating at two cycles per second. 1, record 5, English, - medium%20intensity%20approach%20lighting%20system%20with%20sequenced%20flashing%20lights
Record 5, French
Record 5, Domaine(s)
- Signalisation (Transport aérien)
- Aides à la navigation aérienne
Record 5, Main entry term, French
- balisage lumineux d approche à moyenne intensité avec feux à éclats séquentiels
1, record 5, French, balisage%20lumineux%20d%20approche%20%C3%A0%20moyenne%20intensit%C3%A9%20avec%20feux%20%C3%A0%20%C3%A9clats%20s%C3%A9quentiels
correct, masculine noun
Record 5, Abbreviations, French
- MALSF 1, record 5, French, MALSF
correct, masculine noun
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Balisage lumineux d approche à moyenne intensité avec feux à éclats séquentiels (MALSF) : Ce système de balisage est composé de 7 barres de feux à intensité variable espacées de 60 m sur une distance de 420 m commençant à 60 m du seuil. Les trois barres de feux les plus éloignées du seuil contiennent aussi un ensemble de feux à éclats séquentiels. Les feux clignotent consécutivement en direction du seuil, et ce cycle se répète deux fois par seconde. 1, record 5, French, - balisage%20lumineux%20d%20approche%20%C3%A0%20moyenne%20intensit%C3%A9%20avec%20feux%20%C3%A0%20%C3%A9clats%20s%C3%A9quentiels
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2008-11-13
Record 6, English
Record 6, Subject field(s)
- Signalling and Illumination (Air Transport)
- Airport Runways and Areas
Record 6, Main entry term, English
- runway lead-in lighting system
1, record 6, English, runway%20lead%2Din%20lighting%20system
correct
Record 6, Abbreviations, English
- RLLS 2, record 6, English, RLLS
correct
Record 6, Synonyms, English
- lead-in lighting system 3, record 6, English, lead%2Din%20lighting%20system
correct, United States
- LDIN 3, record 6, English, LDIN
correct, United States
- LDIN 3, record 6, English, LDIN
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
The lead-in lighting system consists of a series of flashing lights installed at or near ground level to describe the desired course to a runway or final approach. The system may be curved, straight, or a combination thereof, as required. The LDIN may be control. Sequenced flashing lights will flash consecutively towards the threshold. 3, record 6, English, - runway%20lead%2Din%20lighting%20system
Record 6, French
Record 6, Domaine(s)
- Signalisation (Transport aérien)
- Pistes et aires d'aéroport
Record 6, Main entry term, French
- dispositif lumineux de guidage vers la piste
1, record 6, French, dispositif%20lumineux%20de%20guidage%20vers%20la%20piste
correct, masculine noun
Record 6, Abbreviations, French
- RLLS 2, record 6, French, RLLS
correct, masculine noun
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Il est recommandé d'installer un dispositif lumineux de guidage vers la piste lorsque, pour éviter un relief dangereux par exemple, ou dans le cadre de procédures antibruit, il est souhaitable d'assurer un guidage visuel le long d'une trajectoire d'approche donnée. [...] Il est recommandé que chacun des groupes de feux d'un dispositif lumineux de guidage vers la piste comprenne au moins trois feux à éclats, en ligne ou en groupe. 3, record 6, French, - dispositif%20lumineux%20de%20guidage%20vers%20la%20piste
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Señales e iluminación (Transporte aéreo)
- Pistas y áreas del aeropuerto
Record 6, Main entry term, Spanish
- sistema de iluminación de guía a la pista
1, record 6, Spanish, sistema%20de%20iluminaci%C3%B3n%20de%20gu%C3%ADa%20a%20la%20pista
correct, masculine noun
Record 6, Abbreviations, Spanish
- RLLS 1, record 6, Spanish, RLLS
correct, masculine noun
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1983-11-17
Record 7, English
Record 7, Subject field(s)
- Airport Runways and Areas
- Operations (Air Forces)
Record 7, Main entry term, English
- sequenced flashing lights
1, record 7, English, sequenced%20flashing%20lights
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- sequential landing lights 2, record 7, English, sequential%20landing%20lights
Record 7, Textual support, English
Record number: 7, Textual support number: 1 OBS
part of landing strip approach lighting. 3, record 7, English, - sequenced%20flashing%20lights
Record 7, French
Record 7, Domaine(s)
- Pistes et aires d'aéroport
- Opérations (Forces aériennes)
Record 7, Main entry term, French
- feux séquentiels 1, record 7, French, feux%20s%C3%A9quentiels
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 OBS
feux d'approche faisant partie du balisage lumineux des pistes d'atterrissage. 2, record 7, French, - feux%20s%C3%A9quentiels
Record 7, Spanish
Record 7, Textual support, Spanish
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