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facilities where few structures have been constructed in accordance with previous safety
clearances, it may be feasible to apply the revised standards herein.
D.3.2. Approval. Approval from Headquarters NAVFACENGCOM must be obtained prior to revising
safety clearances at existing airfield pavements to conform with new standards herein.
NAVFACENGCOM will coordinate the approval with the Naval Air Systems Command and
CNO/CMC as required.
D.3.3. Obtaining Waiver. Once safety clearances have been established for an aviation facility, there
may be occasions where it is not feasible to meet the designated standards. In these cases a waiver
must be obtained from the Naval Air Systems Command. The waiver and its relation to the site
approval process is defined in NAVFACINST 1010.44, Shore Facilities Planning Manual.
D.3.4. Exemptions From Waiver. Certain navigational and operational aids normally are sited in
violation of airspace safety clearances in order to operate effectively. The following aids are within
this group and require no waiver from NAVAIR, provided they are sited in accordance with NAVFAC
Definitive Designs (P-272) and/or the NAVFAC Design Manuals (DM Series):
D.3.4.1. Approach lighting systems.
D.3.4.2. Visual Approach Slope Indicator (VASI) systems and Precision Approach Path Indicator
D.3.4.3. Permanent Optical Lighting System (OLS), portable OLS and Fresnel lens equipment.
D.3.4.4. Runway distance markers.
D.3.4.5. Arresting Gear systems including signs.
D.3.4.6. Taxiway guidance, holding, and orientation signs.
D.3.4.7. All beacons and obstruction lights.
D.3.4.8. Arming and de-arming pad.