Part 77 and Construction Presented to: By: Date: Advanced ASOS Steven Oetzell October 18, 2016
14 CFR Part 77, Objects Affecting Navigable Airspace Reporting objects to the FAA 14 CFR Part 139.331 states that, in a manner authorized by the administrator, the certificate holder must ensure that each object in each area within its authority that has been determined by the FAA to be an obstruction is removed, marked or lighted, unless determined to be unnecessary by an FAA aeronautical study. Part 77 contains the criteria for reporting the construction or alteration of objects to the FAA. Part 77 requires that construction or alteration be reported to the FAA is the object: Is over 200 feet above ground level (AGL) at its site Penetrates an imaginary surface extending upward and outward from a runway or helipad at a slope as shown in the table. Willful failure to comply with Part 77 reporting requirements is a violation of both civil and criminal law. The violation is punishable by fines of up to $10,000 per day and/or imprisonment.
Reporting objects to the FAA If a public use or military airport/heliport has a Longest runway over 3200 feet long Longest runway no more than 3200 feet long Then the imaginary surface slope (horizontal:vertical) is. From the nearest point of the nearest runway/helipad for a horizontal distance of 100:1 20,000 feet 50:1 10,000 feet Helipad of any size 25:1 5,000 feet
Reporting objects to the FAA In addition, the FAA may request that construction or alteration be reported if: Object is in an instrument approach area Available information indicates it may exceed Part 77 standard
Height Adjustments When considering whether to report certain objects, their height must be adjusted for other objects that might be traveling on them. For example, the height of a railroad must be adjusted for the height of the trains. Object Interstate highways Other public roadways Private roads Railroad Waterway Other traverse ways Add. 17 feet 15 feet 10 feet or the height of the highest mobile object 23 feet The height of the highest mobile object expected to traverse it The height of the highest mobile object expected to traverse it
Reporting Form FAA Form 7460-1 Notice of Proposed Construction or Alteration, is used to report the construction or alteration of objects to the FAA. This is accomplished through the Obstruction Evaluation/Airport Airspace Analysis (OE/AAA) website: https://oeaaa.faa.gov/oeaaa/external/portal.jsp If construction or alteration is NOT located on an airport If construction or alteration IS located on an airport
Reporting Form, OE/AAA
Determining Objects An object is an obstruction to air navigation if it is of greater height than any of the heights at the locations shown in the table below. Height 500 feet AGL At the site of the object Location 200 AGL Within 3 nautical miles of the airport reference point A height that would result in less than the required obstacle clearance between the object and the established minimum instrument flight altitude A height that would increase the minimum obstacle clearance altitude (MOCA) Within a terminal obstacle clearance area including an initial approach segment, a departure area an a circling approach area Within an enroute obstacle clearance area including turn and termination areas of a Federal airway or approved off-airway route
Determining Objects An obstruction to air navigation is not necessarily a hazard to air navigation. This determination is made by an airspace review under the procedures outlined in FAA Order 7400.2, Procedures for Handling Airspace Matters. An airspace review also determines whether the obstruction needs to be marked, lighted or removed. Advisory Circular 150/5300-13A, Airport Design, section 306 states However, any existing or proposed object, whether man-made or of natural growth that penetrates these (Part 77) surfaces is classified as an obstruction and is presumed to be a hazard to air navigation.
Part 77 Surfaces Primary Surface Approach Surface Transitional Surface Horizontal Surface Conical Surface
Construction Considerations Obstructions creating line of sight issues for ATCT Obstructions requiring ATCT to change procedures Different taxi routes Restrictions on a runway of a taxiway Effects on approach minima Procedures for coordination for lowering crane when weather is below certain minimums, verifying crane is down by phone numbers for POCs Can the approach minimums be increased if the crane cannot be taken down
References 14 CFR Part 77, Objects Affecting Navigable Airspace 14 CFR Part 139, Certification of Airports FAA Advisory Circular 70/7460-1L, Obstruction Marking and Lighting FAA Advisory Circular 150/5300-13A, Airport Design OE/AAA Website: https://oeaaa.faa.gov/oeaaa/external/portal.jsp FAA Advisory Circular 150/5370-2F, Operational Safety on Airports During Construction
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