At 07:34 AM 8/25/2012, you wrote: >On my airworthiness inspection application, I stated the aircraft would be >VFR day/night. The night flight part required a backup mechanical air speed >indicator. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I have copied below the FAR 91.205 that states what equipment / instruments are required for day and night VFR. It does not require backup instruments. If your electronic instruments are "approved equivalents" for day VFR then they are good for night VFR. How many of us are aware we need anti-collision lights for day VFR? I wasn't. I'd get your backup instrument requirements removed so you don't have to live with that for the life of the airplane. I think your inspector was pulling in parts of FAR part 23 which I don't think applies to experimental aircraft. Check it out further and make them get it right. I think you had an inspector that went off the deep end. Just my opinion. Larry Flesner Code of Federal Regulations <http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgFar.nsf/FARSBySectLookup/91.205%21OpenDocument&ExpandSection=-1#_Section1> Hide details for Sec. 91.205 Sec. 91.205 Part 91 GENERAL OPERATING AND FLIGHT RULES Subpart C--Equipment, Instrument, and Certificate Requirements Sec. 91.205 Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and equipment requirements. (a) General. Except as provided in paragraphs (c)(3) and (e) of this section, no person may operate a powered civil aircraft with a standard category U.S. airworthiness certificate in any operation described in paragraphs (b) through (f) of this section unless that aircraft contains the instruments and equipment specified in those paragraphs (or FAA-approved equivalents) for that type of operation, and those instruments and items of equipment are in operable condition. (b) Visual-flight rules (day). For VFR flight during the day, the following instruments and equipment are required: (1) Airspeed indicator. (2) Altimeter. (3) Magnetic direction indicator. (4) Tachometer for each engine. (5) Oil pressure gauge for each engine using pressure system. (6) Temperature gauge for each liquid-cooled engine. (7) Oil temperature gauge for each air-cooled engine. (8) Manifold pressure gauge for each altitude engine. (9) Fuel gauge indicating the quantity of fuel in each tank. (10) Landing gear position indicator, if the aircraft has a retractable landing gear. (11) For small civil airplanes certificated after March 11, 1996, in accordance with part 23 of this chapter, an approved aviation red or aviation white anticollision light system. In the event of failure of any light of the anticollision light system, operation of the aircraft may continue to a location where repairs or replacement can be made. (12) If the aircraft is operated for hire over water and beyond power-off gliding distance from shore, approved flotation gear readily available to each occupant and, unless the aircraft is operating under part 121 of this subchapter, at least one pyrotechnic signaling device. As used in this section, "shore" means that area of the land adjacent to the water which is above the high water mark and excludes land areas which are intermittently under water. (13) An approved safety belt with an approved metal-to-metal latching device for each occupant 2 years of age or older. (14) For small civil airplanes manufactured after July 18, 1978, an approved shoulder harness for each front seat. The shoulder harness must be designed to protect the occupant from serious head injury when the occupant experiences the ultimate inertia forces specified in Sec. 23.561(b)(2) of this chapter. Each shoulder harness installed at a flight crewmember station must permit the crewmember, when seated and with the safety belt and shoulder harness fastened, to perform all functions necessary for flight operations. For purposes of this paragraph-- (i) The date of manufacture of an airplane is the date the inspection acceptance records reflect that the airplane is complete and meets the FAA-approved type design data; and (ii) A front seat is a seat located at a flight crewmember station or any seat located alongside such a seat. (15) An emergency locator transmitter, if required by Sec. 91.207. (16) For normal, utility, and acrobatic category airplanes with a seating configuration, excluding pilot seats, of 9 or less, manufactured after December 12, 1986, a shoulder harness for-- (i) Each front seat that meets the requirements of Sec. 23.785 (g) and (h) of this chapter in effect on December 12, 1985; (ii) Each additional seat that meets the requirements of Sec. 23.785(g) of this chapter in effect on December 12, 1985. (17) For rotorcraft manufactured after September 16, 1992, a shoulder harness for each seat that meets the requirements of Sec. 27.2 or Sec. 29.2 of this chapter in effect on September 16, 1991. (c) Visual flight rules (night). For VFR flight at night, the following instruments and equipment are required: (1) Instruments and equipment specified in paragraph (b) of this section. (2) Approved position lights. (3) An approved aviation red or aviation white anticollision light system on all U.S.-registered civil aircraft. Anticollision light systems initially installed after August 11, 1971, on aircraft for which a type certificate was issued or applied for before August 11, 1971, must at least meet the anticollision light standards of part 23, 25, 27, or 29 of this chapter, as applicable, that were in effect on August 10, 1971, except that the color may be either aviation red or aviation white. In the event of failure of any light of the anticollision light system, operations with the aircraft may be continued to a stop where repairs or replacement can be made. (4) If the aircraft is operated for hire, one electric landing light. (5) An adequate source of electrical energy for all installed electrical and radio equipment. (6) One spare set of fuses, or three spare fuses of each kind required, that are accessible to the pilot in flight.
