LOMs — locator outer markers — Aviation Definition

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data packers
constant radius arc
Constant radius arc or RF leg
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DME NAVAID
CD leg — course to a DME distance
Track from a fix to a distance measuring equipment (DME) distance or FD leg
FD leg
Course to a DME distance or CD leg
database VOR NAVAID
VOR NAVAID
VD leg — heading to a DME distance termination
VM leg — heading to a manual termination
Heading to a DME distance termination or VD leg
VD leg
Heading to a manual termination or VM leg
VM leg
HA leg — racetrack course reversal altitude termination
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Racetrack course reversal
HF leg
single circuit terminating at the fix (base turn) (HF)
JNC
I-SNA 1 DME fix
SLI R-118
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localizer south course
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approach identifier field
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diversionary airport
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ILS Y RWY 28
Airpark South
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indefinite closure status
ILS 2 RWY 28
diversionary or emergency option
Storage Limitations
master databases
multiple approaches of the same type to the same runway
NDBs — non-directional beacons
LOMs — locator outer markers
five-character identifier
Localizer Performance with Vertical Guidance
Localizer Performance without Vertical Guidance
epoch year variation
three-letter identifier
five character identifiers
ABCNB
PENDY NDB
VOR34
epoch year variation format
conventional NAVAIDs
actual station declination
station declination
cutoff time
lifecycle of the avionics
cutoff

192 words in this area · Next word: five-character identifier →

Plain English Meaning

A ground station near the start of an ILS approach that does two jobs: it acts as a homing beacon to help guide you onto the final approach line, and it tells you when you have flown directly over it.

Full Definition

A Locator Outer Marker (LOM) is a navigation facility that combines a low-power non-directional beacon (NDB) with an outer marker beacon, located at the outer marker position of an Instrument Landing System (ILS) approach, typically 4 to 7 miles from the . The NDB portion provides guidance to help the intercept the ILS , while the outer marker portion transmits a signal straight up that triggers a indication when the aircraft passes overhead.

LOMs — locator outer markers

Plain English Meaning

Full Definition

Context Anchor

Derivation

Why Pilots Care

Intuition Check

Example Sentence 1

Example Sentence 2