Dd Form 175 1 Flight Weather Briefing – Fill Out and Use This PDF

The DD Form 175-1, titled "Flight Weather Briefing," is designed to provide essential weather data for aviation operations. This form encompasses several critical aspects required for flight safety, including takeoff data, en-route and mission data, aerodrome forecasts, and pertinent remarks or comments, all of which are integral for pilots in planning and conducting flights under varying weather conditions. For those looking to understand or fill out the DD Form 175-1, click the button below for a comprehensive guide.

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What Is DD Form 175-1 and How Is It Structured?

The DD Form 175-1 (Flight Weather Briefing) is an official U.S. Department of Defense aviation document. Military pilots, navigators, and aviation weather forecasters use it to record all weather information required before a military flight departs. Completing the form creates a shared record between the flight crew and the operations center that confirms a formal weather briefing took place.

Part I of the form covers takeoff data. A weather forecaster fills in the planned takeoff time in both local and Zulu (UTC) formats, the runway designation, and the takeoff temperature and dewpoint readings. Pressure altitude and surface wind direction (in degrees magnetic) and wind speed (in knots) are entered here as well. Forecast wind data for the initial climb altitude is recorded at the bottom of Part I to help the pilot plan the departure profile.

Part II captures en-route and mission data. This section documents weather conditions along the planned flight path from departure to the destination. The weather briefer records flight level winds and temperatures at each relevant altitude block using data from an official WINDS ALOFT product. A coded checkbox system covers weather hazards: turbulence is noted by category (light, moderate, or severe), icing is flagged by type (clear or rime) and altitude, and freezing levels are entered in feet MSL. Cloud coverage, visibility, precipitation types, and any active SIGMETs or AIRMETs affecting the route are referenced in the advisory fields. High-altitude flights may also carry space weather or solar radiation advisories in the SIGMET area.

Part III provides aerodrome forecasts. Forecasters enter predicted weather for the primary destination airfield and one or more alternate landing sites. For each airfield, the forecast covers expected surface wind direction and speed, the lowest forecast cloud layer ceiling in hundreds of feet and the coverage amount (FEW, SCT, BKN, or OVC), visibility in statute miles, significant weather phenomena (fog, rain, snow, thunderstorms, etc.), and the altimeter setting. These values reflect the conditions forecast for the planned arrival window so the crew can assess whether the alternate is viable before takeoff.

Part IV is the comments and remarks section. Weather briefers use this area to note any conditions, special operational factors, or supplementary forecast products not captured in the structured fields above. Reference numbers for attached PIREPs, TAFs, or mission-specific weather overlays go here. A pilot flight log (PFL) entry or special advisory that affects the mission plan can also be noted in Part IV to keep all briefing elements together.

Part V documents the formal completion of the weather briefing. The aviation weather forecaster enters the date and local time of the briefing and the void time after which the briefing expires. The flimsy briefing number assigned to the transaction is entered in the FLIMSY BRIEFING NO field. The forecaster then initials the form. The pilot, navigator, or crew chief receiving the briefing prints their name in the NAME OF PERSON RECEIVING BRIEFING field and countersigns to confirm receipt and understanding of the weather information.

Together, the five parts of the DD Form 175-1 create a complete pre-flight weather record. Both the flight crew and the operations center keep a copy. The briefing record in Part V protects both the forecaster and the flight crew by documenting that a formal weather briefing occurred and that all safety-critical weather information was reviewed before the aircraft departed. Military units are required to complete this form before any flight that includes a formal in-person or telephone weather briefing.

The DD Form 175-1 works with standard aviation weather products from the National Weather Service (NWS), the Air Force Weather Agency (AFWA), and equivalent agencies in allied nations. Completed forms are retained in the unit's flight records for the period specified by applicable military regulations.

Question	Answer
Form Name	Dd Form 175 1
Form Length	1 pages
Fillable?	No
Fillable fields	0
Avg. time to fill out	15 sec
Other names	REBRIEF, ALTN, weather breif form, ENROUTE

How to Edit Dd Form 175 1 Online for Free

Use FormsPal to access and download DD Form 175-1. Before you start filling out the form, gather the following information from your aviation weather forecaster or official weather products:

Planned takeoff time in local and Zulu (UTC) formats
Departure runway designation
Takeoff temperature and dewpoint at the departure airfield
Pressure altitude for the departure location
Surface wind direction in degrees magnetic and speed in knots
Climb winds for the initial departure altitude
Flight level winds and temperatures at each cruise altitude
Active SIGMET and AIRMET advisories along the route
Terminal Aerodrome Forecasts (TAFs) for destination and alternate airfields

Step 1 – Fill Out Part I (Takeoff Data)

Start at the top of the form. Write the planned takeoff time in local time, then enter the Zulu (UTC) equivalent in the adjacent field. Enter the two-digit runway designation and the direction the aircraft will be heading at takeoff. Record the current takeoff temperature in degrees Celsius and the dewpoint reading from the current weather observation. Enter the pressure altitude for the departure airfield in the designated box. Fill in the surface wind direction as a three-digit magnetic bearing and the speed in knots. If your weather briefer has provided climb winds for the initial departure altitude, enter that wind direction and speed in the climb wind fields in the lower portion of Part I.

DD Form 175-1 Part I showing takeoff temperature, dewpoint, pressure altitude, and surface wind fields

Step 2 – Fill Out Part II (En-route and Mission Data)

Part II covers weather along the planned flight route. Start with the flight level winds and temperatures section in the upper portion of the form. Using the most current WINDS ALOFT forecast, record the wind direction and speed plus the temperature in degrees Celsius at each applicable altitude block for your planned route. Work through the altitude levels from low to high and enter only the levels that apply to your mission profile.

Next, work through the weather hazard checkboxes from top to bottom. For turbulence, check the applicable severity box (LIGHT, MODERATE, SEVERE, or EXTREME) and enter the location and valid altitude range in the adjacent fields. For icing, mark the forecast type (RIME, CLEAR, or MIXED) and the altitude band where icing is expected. Enter the forecast freezing level altitude in feet MSL in the FREEZING LEVELS field. Check any applicable precipitation types, such as SHOWERS or FREEZING rain, and note the geographic location and valid times for each hazard. If active SIGMETs or AIRMETs cover your route, record the advisory numbers and a short description of the covered area and altitudes.

DD Form 175-1 Part II showing turbulence, icing, freezing levels, and SIGMET fields

Step 3 – Fill Out Parts III, IV, and V

Part III requires Terminal Aerodrome Forecast (TAF) data for your destination airfield and at least one alternate. For the destination, enter the expected surface wind direction and speed, the lowest forecast cloud layer ceiling height in hundreds of feet and the sky coverage code (FEW, SCT, BKN, or OVC), the forecast visibility in statute miles, any significant weather phenomena using standard aviation codes (TS, FG, RA, SN, etc.), and the altimeter setting in inches of mercury. Record the valid time for each TAF in the column provided. Repeat the process for each alternate airfield, using the TAF valid during the planned arrival window at that field.

Part IV is for additional information not captured in the structured sections. Write the reference numbers and titles of any attached weather products, PIREPs, or special mission advisories in the REMARKS and ATTACHMENTS fields. If the briefer has verbally added information that is not on a standard form, note a brief summary here. Mark the ATTACHMENTS checkbox YES if any supplementary products are included.

Part V is the sign-off section. The aviation weather forecaster enters the date the briefing took place, the local briefing time, and the void time after which this briefing is no longer valid for planning. The FLIMSY BRIEFING NO field gets the serial number assigned to this transaction. The forecaster then prints their initials and signs in the FORECASTER'S INITIALS field. The pilot, navigator, or other crew member receiving the briefing prints their name in the NAME OF PERSON RECEIVING BRIEFING field and countersigns to confirm they received and understood the complete weather briefing.

DD Form 175-1 Parts III-V showing aerodrome forecasts, remarks, and the briefing record sign-off

Review all fields before signing. The void time in Part V must match the expiration time shown on the weather products used. Both the forecaster and the receiving crew member must sign before the form is filed. Retain one copy with the flight records and give a copy to the pilot.

Looking for related aviation and military forms? Access the standard weather briefing form, the international flight plan form, and the ASA flight planning sheet on FormsPal. For other Department of Defense documentation, see DD Form 1351-2 (travel voucher), DD Form 93 (record of emergency data), and DD Form 1750 (packing list). Additional related forms include DD Form 1753 and DD Form 149 available on FormsPal. You can also find special flight permits and other aviation documents in the FormsPal catalog.