AEROTHAI_FISB tools

Initial Parameters

RWY Elev

ft

TCH

ft

Approach Offset

Leg 1 start altitude = RWY elevation + TCH (+ offset). Each finished leg feeds its end altitude / distance into the next leg.

Full Profile

ClimbDescendLevel

Enter altitudes and distances to build the profile

Approach Profile

--

Aircraft approach angle

3.00°

Outboard (Box 1) on left. White = aircraft above box transition angle.

Angle Converter Decimal ↔ Deg° Min'

Decimal (°)

Deg

Min'

Box Naming Reference

AEROTHAI	ICAO	FAA	Position
Box 1	A	#4	Away from RWY — lowest angle
Box 2	B	#3
Box 3	C	#2
Box 4	D	#1	Close to RWY — highest angle

Plan View

Orbit Cal

VOR Ident

Orbit Dist

NM

Gnd Speed

kt

Start Radial

°

Final Crs

°

Direction & Time

Direction

Start (UTC)

Morse

Results

Full Orbit Dist

-- NM

Full Orbit Time

--:--

min:sec

Full Orbit Complete

--:-- UTC

Cross Final Crs Dist

-- NM

Cross Final Crs Time

--:--

min:sec

Cross Final Crs At

--:-- UTC

Orbit Plot

StartFinal crsArc flown

Prediction

Start Radial

°

Orbit

NM

Gnd Speed

kt

Direction & Time

Direction

Start (UTC)

Calculate

Radial → Time

°

Time → Radial

min

Results

Time to Target Radial

--:-- min

Predicted Radial

--°

Prediction Plot

StartTargetPredicted

VOR Siting

VOR Station

VOR Ident

VOR Height

ft

Obstacle

Radial

°

Distance

NM

OBS Height

ft

Aircraft

Distance from VOR

NM

Override Angle (optional)

°

Earth Curvature

WAITING DATA

Screening Angle

--°

Min Alt · Flat Earth

--

Min Alt · Curved Earth

--

VOR Profile View

Enter VOR height and obstacle distance / height

VORObstacleScreening lineAircraft min alt

Signal Analysis (FSPL)

VOR Frequency

MHz

Distance

NM

VOR TX Power

W

DME TX Power

W

Paired DME Freq -- ICAO Annex 10 pairing

Assumes isotropic antennas, 3 dB system loss, RX sensitivity −93 dBm (VOR / DME airborne), −86 dBm (DME ground), 1000 W interrogator.

Link Budget

Free Space Path Loss--

Received Power--

Link Margin--

Signal Status--

Max Usable Range--

VOR vs DME

VOR Signal Margin--

DME Signal Margin--

DME disadvantage--

Signal Strength vs Distance

VORDME ↓

Enter frequency and TX power to plot

ILS Profile Altitude

ILS Ident

Threshold Elev

ft

TCH

ft

Dist from Thr

NM

Glide Path Angle

°

Altitude (MSL)

-- ft

Height (HAT)

-- ft

Approach

Enter distance from threshold

ILS Coverage

Final Course

°

Sector

Radial (Inbound)--

Left Limit--

Right Limit--

Time for Arc

Distance

NM

Gnd Speed

kt

Start Time (UTC)

Time for ±40° Arc

--:--

Finish (UTC)

--:--

Finish (Local)

--:--

Coverage Sector

Enter final course

LOC Course Width ICAO Annex 10

ICAO Annex 10 standard course width sets full-scale deflection (±0.155 DDM / ±150 µA) at ±106.7 m (±350 ft) from centreline at the threshold (total gate 213.4 m / 700 ft).

Runway Length

Length (Meters)

m

Length (Feet)

ft

LOC Antenna Setback (from Stop End)

Setback (Meters)

m

Setback (Feet)

ft

Course Width (θ)

-- °

Full Sector (150 µA – 150 µA)

Half Sector (±θ/2)

-- °

Enter runway length

Total Dist (THR → LOC)--

Threshold Gate (±350 ft)213.36 m / 700 ft

Angular Sensitivity--

Linear Sensitivity (at THR)0.00145 DDM/m · 1.41 µA/m

Sector Width at Distance (from RWY THR, outbound on approach)

Distance (m)

m

Distance (ft)

ft

Distance (NM)

NM

Full Width (edge – edge)

-- m

150 µA L ↔ 150 µA R

Half Width (CL → edge)

-- m

0.155 DDM / 150 µA

Dist from RWY THR--

Dist from LOC Antenna--

Linear Sensitivity (at Dist)--

Edge = full-scale deflection (±0.155 DDM / ±150 µA). Width grows linearly from the LOC antenna: half-width = 106.68 m × (D + d) / D. D = THR → LOC antenna, d = distance from THR. With "From RWY THR", a negative distance is a point between THR and the LOC antenna.

Course Sector Geometry

Enter runway length in m or ft

DDM ↔ µA ICAO Annex 10

Convert DDM (Difference in Depth of Modulation) to / from µA. Dots mark 30 µA steps up to full-scale 150 µA.

LOCALIZER (Horizontal CDI)FSD 0.155 DDM = 150 µA

DDM

µA

−150 µA0+150 µA

GLIDESLOPE (Vertical CDI)FSD 0.175 DDM = 150 µA

DDM

µA

+µA (Top): Fly Up (Below GP)

−µA (Bot): Fly Down (Above GP)

+150 µA0−150 µA

Annex 10 Reference

Parameter	LOC	GS
FSD DDM	0.155	0.175
FSD µA	150	150
Scale Factor	967.74 µA/DDM	857.14 µA/DDM

Find Unknown

Solve for

Path Angle (θ)

°

Theodolite Height (H)

m

PAPI Box Height (X)

m

Distance (D)

m

Calculated Value

--m

Formula: --

Geometry

Site Conditions

Angle (θ)

°

PAPI Height (X)

m

Required theodolite distance from the PAPI unit for each engineer eye height, relative to the 1.50 m base.

Required Distance (D) by Engineer Height

Engineer Height (H)	Distance (D) m	Diff (vs 1.5 m)

Setup Geometry

Waypoint Plot

Waypoints appear here as you type

Distance from Origin

Distance & azimuth from reference (0°, 0°) to a waypoint.

True Track from (0,0)

-- °

Distance from (0,0)

-- NM

Metres-- m

Feet-- ft

Kilometres-- km

Track Extension

Point A (Start)

Point B (Reference)

Extension

Dist B → C

NM

Azimuth A → B

-- °

Base Dist A → B

-- NM

Total Dist A → C

-- NM

Point C (Result)

DMS--

DMM--

Plot

Trigonometry / Altitudes

Point A (Start)

True Track

°

Dist Calc Mode

Alt A

ft

Alt B

ft

Gradient

%

Calc Distance A → B

-- NM

Point B (Result)

DMS--

DMM--

Plot

Arc Generator

Center Point

Start / End By

Radius

NM

Interval

°

Start Radial

°

End Radial

°

ForeFlight Export

Exports user_waypoints.csv for bulk import. Names: PREFIX_R090, PREFIX_R093 … (all caps, min 3 chars). Lat/Lon in decimal degrees.

Prefix

Description

Elevation

ft

Arc Plot

Enter center, radius and radials, then Calculate

Arc Points

#	Radial	Lat (DMS)	Lon (DMS)	Lat (DMM)	Lon (DMM)

Fuel Calculator

Specific Gravity (SG)

Liters

L

Gallons (US)

gal

Pounds

lb

Kilograms

kg

Unit Converter

Distance

NM

Meters

Feet

KM

Speed

Knots

MPH

KPH

m/s

Pressure

hPa (mbar)

inHg

Gradient

Percent

%

Degree

°

Altimeter Setting QNH → STD (ICAO ISA Exact)

QNH (hPa)

hPa

QNH (inHg)

inHg

Reading (Indicated)

ft

ISA Exact Correction

-- ft

145442.16 × [1 − (QNH / 1013.25)^0.190263]

Pressure Alt (STD 1013.25)

-- ft

Indicated Alt + Δh(ISA)

ICAO ISA Exact (Power Law)-- ft

ISA Sea-Level Linear (27.31 ft/hPa)-- ft

Rule of Thumb (30.00 ft/hPa)-- ft

Morse Code · / — ↔ ABC

Type . (dot) and - (dash) for each letter. Separate letters with SPACE, words with / or a double space.

Morse Input

Decoded Text

—

Encode: Text → Morse

—

Morse Code Reference