An Inoperative Placard will be displayed in a prominent position to be seen by flight crew and will be noted on ADLS.
9. Distance
Measuring Equipment
(DME) Systems
D
2
0
Except where en route operations or approach minimums require its use, any in excess of those required by 14 CFR may be inoperative.
NOTE: Those required by 14 CFR Part 91.205 or 135.165 are operative.
None required.
None required.
An Inoperative Placard will be displayed in a prominent position to be seen by flight crew and will be noted on ADLS.
10. Radio Altimeter
Systems
C
2
1
(O) May be inoperative provided:
Remaining Radio Altimeter test results are satisfactory prior to dispatch,
Landing weather minimums or operating procedures do not required its use,
Other systems affected (EGPWS, TCAS, Autothrottle, Altimeter Ground Awareness Display, Synthetic Vision Primary Flight Display and automatic cowl/wing anti-icing are considered, and
Approach capability at destination and alternate airports must be assessed.
NOTE: Selection of RAD ALT inhibits Mode 6 advisories from GPWS which inhibits LPV approach capability.
None required.
Flight crew will assess approach capability at destination and alternate airports.
An Inoperative Placard will be displayed in a prominent position to be seen by flight crew and will be noted on ADLS.
11. Long Range
Navigation Systems
(IRS, GPS and
GNSSU)
C
-
-
May be inoperative except where en route operations or approach minimums require the use of GPS or GNSSU.
None required.
None required.
An Inoperative Placard will be placed on affected Instrument Controller and will be noted on ADLS.
C
-
-
As required by 14 CFR.
NOTE: IRS Navigation Function only. See Attitude Reference Sensors for IRS Attitude Function.
None required.
None required.
An Inoperative Placard will be placed on affected Instrument Controller and will be noted on ADLS.
1) GNSSU WAAS (Wide Area Augmentation System or SBAS – Space Based Augmentation System) Function
C
2
0
WAAS function may be inoperative provided en route and approach procedures do not require its use.
NOTE: GPS must be operative for ADS-B Squitter Transmissions to broadcast accurate data.
None required.
None required.
An Inoperative Placard will be placed on affected Instrument Controller and will be noted on ADLS.
