Federal Aviation Administration, DOT § 25.1305

§ 25.1207 Compliance. (4) A gyroscopic rate-of-turn indi- Unless otherwise specified, compli- cator combined with an integral slip- ance with the requirements of §§ 25.1181 skid indicator (turn-and-bank indi- through 25.1203 must be shown by a full cator) except that only a slip-skid indi- scale fire test or by one or more of the cator is required on large airplanes following methods: with a third attitude instrument sys- tem useable through flight attitudes of (a) Tests of similar powerplant con- ° figurations; 360 of pitch and roll and installed in (b) Tests of components; accordance with § 121.305(k) of this (c) Service experience of title. with similar powerplant configura- (5) A bank and pitch indicator (gyro- tions; scopically stabilized). (d) Analysis. (6) A direction indicator (gyroscop- ically stabilized, magnetic or non- [Amdt. 25–46, 43 FR 50598, Oct. 30, 1978] magnetic). (c) The following flight and naviga- Subpart F—Equipment tion instruments are required as pre- scribed in this paragraph: GENERAL (1) A speed warning device is required for turbine engine powered airplanes § 25.1301 Function and installation. and for airplanes with VMO/MMO great- Each item of installed equipment er than 0.8 VDF/MDF or 0.8 V D/MD. The must— speed warning device must give effec- (a) Be of a kind and design appro- tive aural warning (differing distinc- priate to its intended function; tively from aural warnings used for (b) Be labeled as to its identification, other purposes) to the pilots, whenever function, or operating limitations, or the speed exceeds VMO plus 6 knots or any applicable combination of these MMO +0.01. The upper limit of the pro- factors; duction tolerance for the warning de- (c) Be installed according to limita- vice may not exceed the prescribed tions specified for that equipment; and warning speed. (d) Function properly when installed. (2) A machmeter is required at each pilot station for airplanes with com- § 25.1303 Flight and navigation instru- ments. pressibility limitations not otherwise indicated to the pilot by the airspeed (a) The following flight and naviga- indicating system required under para- tion instruments must be installed so graph (b)(1) of this section. that the instrument is visible from each pilot station: [Amdt. 25–23, 35 FR 5678, Apr. 8, 1970, as (1) A free air temperature indicator amended by Amdt. 25–24, 35 FR 7108, May 6, or an air-temperature indicator which 1970; Amdt. 25–38, 41 FR 55467, Dec. 20, 1976; Amdt. 25–90, 62 FR 13253, Mar. 19, 1997] provides indications that are convert- ible to free-air temperature. § 25.1305 Powerplant instruments. (2) A clock displaying hours, min- utes, and seconds with a sweep-second The following are required power- pointer or digital presentation. plant instruments: (3) A direction indicator (non- (a) For all airplanes. (1) A fuel pres- stabilized magnetic ). sure warning means for each engine, or (b) The following flight and naviga- a master warning means for all engines tion instruments must be installed at with provision for isolating the indi- each pilot station: vidual warning means from the master (1) An . If airspeed warning means. limitations vary with altitude, the in- (2) A fuel quantity indicator for each dicator must have a maximum allow- fuel tank. able airspeed indicator showing the (3) An oil quantity indicator for each variation of VMO with altitude. oil tank. (2) An (sensitive). (4) An oil pressure indicator for each (3) A rate-of-climb indicator (vertical independent pressure oil system of speed). each engine.

465

VerDate Aug<31>2005 13:21 Mar 01, 2007 Jkt 211043 PO 00000 Frm 00475 Fmt 8010 Sfmt 8010 Y:\SGML\211043.XXX 211043 cprice-sewell on PROD1PC66 with CFR