Vertical Obstacle Assessment | Aeronautical Information Service

Vertical Obstructions

An obstacle assessment is required for any cranes/buildings/structures that may infringe existing ADF publication Terminal Australia (TERMA) flight procedures. For all obstacle assessments, an AIS-AF Obstacle Assessment Form should be raised (local forms are acceptable). The completed form is to be scanned and emailed to AIS-AF. Due to a considerable backlog and manning constraints, AIS-AF will process Obstacle Assessments in a minimum of 4 weeks. AIS-AF Ops staff will notify you of any changes in the turnaround time as the assessment progresses.

PDF request form: AIS-AF Obstacle Assessment Form

Web request form (best viewed in Google Chrome): AIS-AF Obstacle Assessment Web Form

IMPORTANT: AIS-AF will only assess against flight procedures that are published in TERMA. If your airfield has procedures published in the civil publication Departure and Approach Procedures (DAP), you will need to request a separate assessment against those procedures by either Airservices Australia (AsA) or Global Airspace Solutions (GAS). To request this assessment, please email Airport.Developments@AirservicesAustralia.com and, if needed, maintenance@globalairspacesolutions.com. Check the centre bottom of DAP plates to determine if GAS have designed instrument flight procedures at your aerodrome.

NOTE: AsA has a 6 week lead time requirement for assessments, please engage them as soon as possible.

Site / Emergency contact

Title/Rank

First name

Last name

Site/Emergency contact details

Phone

Address

Address Line 2

City

State

Post Code

Country

Obstacle details

Lat/Long

Latitude	Longitude
Latitude	Longitude

Height of ground level at above coordinates

Date/Hours of Crane Operation

Date/Hours of Crane Operation
Start date Start date: Date Start date: Time End date End date: Date End date: Time

Date/Hours of construction

Date/Hours of construction
Start date End date

ADF Base contact

Title/Rank

First name

Last name

Note: For complex proposals, the form attached to CASA AC139-08(0) ‘Reporting of Tall Structures’ may be submitted in addition to this document to the ABOP for processing.

Vertical Obstructions

AIS-AF strongly recommends the submission of an VO Assessment request includes a KML (or similar) file that depicts the VO to be assessed. This assists AIS-AF in conducting an accurate assessment as soon as possible.