Vertical Obstacle Assessment | Aeronautical Information Service

Obstacle Assessments

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 is to be raised. The completed form is to be scanned and emailed to AIS-AF at: ais.af@defence.gov.au. AIS-AF requires 10 business days to process an assessment.

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 Airservices Australia (AsA). To request this assessment, please email Airport.Developments@AirservicesAustralia.com.
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 ABCP for processing.

Obstacle Assessments

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.