WxDecoder

US-4004 Weather Harps Haven Heliport

Hartland Township, MichiganElevation 1,000 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KPTK · 14 NM E · 24 min old
Ceiling 25,000 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KPTK
WIND
200@5
steady
VISIBILITY
10 SM
16.1 km
CEILING
25,000 ft
lowest BKN/OVC
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 180° at 4 kt, visibility 10 SM, temperature 20C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight partly cloudy then patchy fog, low near 45F, 2% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Mostly Sunny then Slight Chance T-storms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Partly Cloudy then Patchy Fog 45 SW 5 kt – 2%
Monday Patchy Fog then Partly Sunny 64/42 NNW 6 kt – 5%
Tuesday Partly Sunny 60/46 E 7 kt – 0%
Wednesday Partly Sunny 69/52 SSE 7 kt – 1%
Thursday Mostly Sunny then Slight Chance T-storms 72/52 SW 10 kt – 16% Thunderstorms in the forecast
Friday Partly Sunny 69/52 SW 5 kt – 16%
Saturday Slight Chance Light Rain 68/54 SSE 7 kt – 25%
Sunday Chance Light Rain 65 SSW 8 kt – 43%

Source: National Weather Service (office DTX). Forecast issued 2217Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for US-4004. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 135 ft

H1
Dimensions
135 x 45 ft
Surface
Turf
RWY H1

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
1,000 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2237Z 6:37 PM
Sunrise
1200Z 8:00 AM
Loggable night
2306Z (7:06 PM local) → 1132Z (7:32 AM local)
end of evening to start of morning civil twilight
Position lights required
2237Z (6:37 PM local) → 1200Z (8:00 AM local)
sunset to sunrise (91.209)
Night passenger currency
2337Z (7:37 PM local) → 1100Z (7:00 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Harps Haven Heliport is in Hartland Township, Michigan. Field elevation 1,000 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeHeliport
ManagerGLENN E HARPER
Manager phone313-732-5213
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAUS-4004
SectionalDETROIT
Center (ARTCC)CLEVELAND
Flight service (AFSS)LANSING
RegionMichigan
CountryUnited States
Coordinates42.6048, -83.7350
Distance from city2 NM S
SERVICES & LIGHTING
Control towerNon-towered
CTAF122.900
FREQUENCIES

Communications

122.900
CTAF
CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

US-4004 traffic patterns

2026-07-11 to 2026-10-18, 4 days observed · data 2026-10-23

Low confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
2
Operations trend (1 days)

Busiest day: Sat · Busiest month: Oct

FLEET MIX
Helicopter 75%Piston single 25%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›UHEL (Helicopter) · ~3 landings/mo
›M20P (Piston single) · ~1 landings/mo
›C182 (Piston single) · ~0 landings/mo
LIKELY BASED AIRCRAFT
Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly rotorcraft.

›UHEL (Helicopter)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

US-4004 has no on-field report. Nearest reporting station: KPTK (14 NM E, VFR).

KPTK Oakland County International Airport
14 NM E
VFR
KFNT Bishop International Airport
22 NM N
VFR
KARB Ann Arbor Municipal Airport
23 NM S
UNKNOWN
KYIP Willow Run Airport
24 NM S
VFR
KDTW Detroit Metropolitan Wayne County Airport
29 NM SE
VFR
KJXN Jackson County Airport/Reynolds Field
38 NM SW
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC DETROIT APCH AT 734-955-1404.
›1MI1 LCTD 3 NM NE OF 45G ARPT; ADZ 45G TFC OF PSN & INTNS VIA SAME CTAF.
›ONLY ONE HEL SHALL OCCUPY THE HLP AT A TIME.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-4004 on OurAirports
FREQUENTLY ASKED
Does US-4004 have a METAR?
No on-field METAR is issued for US-4004. This page uses the nearest reporting station as a reference.
Does US-4004 have a TAF?
No TAF is issued directly for US-4004. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-4004?
US-4004 sits at 1,000 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-4004?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.