AD/INST/56 Amdt 1 Avidyne Corporation Primary Flight Displays (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/INST/56 and issues the following AD under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Instruments and Automatic Pilots

AD/INST/56 Amdt 1 Avidyne Corporation Primary Flight Displays 6/2008

Applicability:

Avidyne Corporation (Avidyne) Primary Flight Displays (PFD) with Part Numbers (P/N) 700-00006-000, 700-00006-001, 700-00006-002, 700-00006-003 and
700-00006-100.

Note 1:  These PFDs are known to be installed on, but not limited to, the following aeroplane models:

Adam Aircraft Model A500;

Cessna Aircraft Company Model 441 (STEC Alliant United States Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) SA09547AC-D incorporated);

Cessna Aircraft Company Models LC42-550FG and LC41-550FG (Columbia Aircraft Manufacturing and The Lancair Company previously held the type certificate for these aeroplanes);

Cirrus Design Corporation Models SR20 and SR22;

Diamond Aircraft Industries GmbH Model DA 40;

Hawker Beechcraft Corporation Model E90 (STEC Alliant FAA STC SA09545AC-D incorporated);

Hawker Beechcraft Corporation Model 200 series (STEC Alliant FAA STC SA09543AC-D incorporated); and

Piper Aircraft, Inc. Models PA-28-161, PA-28-181, PA-28R- 201, PA-32R-301 (HP), PA-32R-301T, PA-32-301FT, PA-32-301XTC, PA-34- 220T, PA-44-180, PA-46-350P, PA-46R-350T, and PA-46-500TP.

Requirement:

1.    If not previously accomplished in accordance with the original issue of this Directive, carry out a logbook check of aeroplane maintenance records to determine if any PFD (P/Ns 700-00006-000, 700-00006-001, 700-00006-002, 700-00006-003 or 700-00006-100) with any serial number listed in Table 1 is installed.  If, as a result of this check, you positively identify that the PFD installed does not have a serial number affected by this Directive, then no further action is required.

2.    If, as a result of the Requirement 1 check, any PFD with an affected serial number is found to be installed or the serial number of the PFD cannot be positively identified, accomplish either the following, as applicable:

a.     For aeroplanes with an aircraft flight manual (AFM), pilots operating handbook (POH) or aircraft flight manual supplement (AFMS), incorporate the language in the Appendix of this Directive into the Limitations section.

Note 2:  This may be accomplished by inserting a copy of the Appendix into the AFM/POH/AFMS.

b.    For aeroplanes without an AFM, POH or AFMS:

i.     Incorporate the language in the Appendix of this Directive into the aeroplanes aircraft records; and

ii.     Fabricate a placard using letters at least 3mm (0.125 inches) high with the following words and install the placard on the instrument panel within the pilot's clear view:

“AD/INST/56 CONTAINS LIMITATIONS REGARDING AVIDYNE PRIMARY FLIGHT DISPLAYS (PFD) AND REQUIRED INCORPORATION OF THESE LIMITATIONS INTO THE AIRCRAFT RECORDS.  YOU MUST FOLLOW THESE LIMITATIONS.”

3.    PFD (P/Ns 700-00006-000, 700-00006-001, 700-00006-002, 700-00006-003 or 700-00006-100) with any serial number listed in Table 1 may not be installed on any aeroplane as part of an initial installation or as a replacement spare.

Note 3:  If the aeroplane has an AFM, POH or AFMS, a placard may be fabricated and installed, as described in Requirement 3.b.ii., in addition to, but not instead of, the Requirement 2.a.insertion of AFM, POH or AFMS Limitations.

Note 4:  Avidyne Service Alert No. SA-08-001, dated 12 February 2008, pertains to the subject matter of this Directive.  The service information cautions that all pilots should be vigilant in conducting proper pre-flight and in-flight checks of instrument accuracy.

Table 1 - List of Affected Serial Numbers
D1023 D1031 D1037 D1069 D1075 D1080 D1084 D1090 D1101 D1102 D1106 D1112 D1115 D1136 D1138 D1141 D1144 D1158 D1170 D1172 D1174 D1178 D1188 D1197 D1199 D1212 D1234 D1240 D1249 D1253 D1254 D1256 D1259 D1260 D1262 D1270 D1272 D1277 D1283 D1288 D1313 D1319 D1327 D1351 D1364	D1380 D1387 D1391 D1396 D1405 D1412 D1428 D1433 D1434 D1435 F0006 F0011 F0021 F0030 F0031 F0032 F0035 20002067 20003147 20003296 20003316 20004297 2000531620005487 20008167 20008227 20008255 20009297 20009476 20010177 20010255 20011396 20011456 20012337 20012506 20013406 20014027 20014227 20015357 20017286 20018317 20018425 20018486 20019067 20019297	20020297 20021067 20021197 20022177 20022207 20022217 20022286 20022287 20022296 20023197 20023377 20024196 20024217 20024297 20024397 20024407 20024425 20025067 20025177 20025217 20025317 20026067 20026197 20026207 20026265 20026377 20026407 20026506 20027177 20027226 20027317 20027377 20028177 20028337 20029177 20029197 20029246 20029265 20029506 20030197 20030237 2003120720031217 20031406 20031407	2003151620032067 20032265 20032337 20032516 20033337 20034207 20034327 20035177 20036197 20036237 20036397 20037265 20037285 20038127 20038197 20038337 20039177 20040127 20040177 20040197 20040265 20040317 20041177 20042197 20042265 20042317 20042337 20043197 20043215 20043237 20043247 20044226 20044237 20044285 20045215 20045265 20045437 20046215 20047127 20047147 20047197 20048197 20048215 20048247	20049147 2004935720050147 20050287 20050346 20050434 20051215 20052215 20053247 20053257 20053357 20054247 20054257 20054357 20055087 2005624720056257 20057237 20057346 20058346 200610872006124720062087 2006224720063087 20064087 20064147 20064226 20064337 20066147 20067087 20068147 20068337 20069087 20071237 20072087 20073087 20073346 20073506 20074207 20075087 20075147 20075207 20076217 20076257	20077087 20077506 20078087 20078217 20078257 20078346 20078496 20084257 20085396 20087257 20089257 20089346 20090346 20092297 20093247 20094107 20094416 20097137 20098037 20099107 20099346 20099416 20101416 20102417 20103396 20104246 20106224 20111224 20112224 20114416 20115346 20116346 20118416 20123416 20124456 20126416 20129346 20135337 20139336 20140336 20142037 20142296 20146037 20147336 20153037	20158097 2016109720164097 20165097 20166097 20170097 20170175 20172175 20177175 20202257 20204175 20209246 20214175 20216265 20217175 20224175 20224265 20229265 20232175 20233175 20236175 20236265 20241175 20243265 20265355 20272355 20273355 20278355 20281355 20302384 20308384 20314384 20317384 20320305 20321376 20330376 20330384 20343384 20347305 20348305 20350305 20356305 20359305 20378475 20380225
20381225 20382475 20388225 20402174 20403174 20438345 20440345 20447425 20452315 20458315 20462315 20467315 20540094 20550094 20576445 20580445 20581445 20582525 20584525 20591525 20595065 20599065 20605065 20615116 20618065	20638116 20656284 20732074 20735176 20739176 20755493 20814015 20815015 20974365 20978365 20978434 20986365 20990434 20998365 21002365 21056395 21060395 21063184 21063395 21067184 21070184 21075395 21191045 21200045 21219045	21294414 21311414 21315414 21324414 21325414 21330414 21334414 21340414 21491056 21493056 21596354 21603435 21604435 21606435 21608435 21610435 21614435 21646086 21668086 21812514 21823514 21826514 21836304 21839304 21852304	22310186 22378026 22380026 22398294 22401294 22405085 22412385 22418026 22418385 22419026 22470524 22471524 22472524 22479524 22483524 22486524 22523204 2252526422531204 22559135 22568135 22572135 22578135 22579135 22586135	22602135 22603135 22608135 22642493 22647493 22682076 22908334 22921334 22961354 23166495 23169495 23173495 23175495 23182495 23371455 2337845523443264 23445264 23448264 23581244 23602244 23737136 23738136 24021335 24029335	24231144 24238144 24248144 24381324 24478515 24735144 24746144 24750144 24772085 24773085 24865155 24867155 24870155 24990084 24991084 24993084 24996084 25023034 25027034 25522465 25525465 25530465 25532465 25538465 25600465	25618106 26287114 26528095 26547095 26553095 26569464 26571095 26572095 26584095 26588464 26592464 27865034 28478495 28519495 29019044 29023044 29029044 29031044 29032044 29512216 29514216 29522216
Note 5:  Requirements of this Directive may be accomplished by the registered operator of the aeroplane, provided that he/she holds at least a private pilots licence.
Note 6:  FAA AD 2008-06-28 Amdt 39-15440 refers.
Compliance:	For Requirements 1 and 2 - Within 15 days after the effective date of this Amendment.
For Requirement 3 - As of the effective date of this Amendment.
This Amendment becomes effective on 5 June 2008.
Background:	The initial issue of this Directive required a check of the maintenance records and inspection of the PFD (if necessary) to determine if an affected serial number PFD is installed.  If an affected serial number PFD was installed, the Directive required the incorporation of information that limits operation when certain conditions for the PFD or backup instruments exist.  The Directive resulted from the FAA receiving several field reports of PFDs displaying incorrect altitude and airspeed information.

The Directive was issued to prevent certain conditions from existing when PFDs display incorrect attitude, altitude, and airspeed information.  This could result in airspeed/altitude mismanagement or spatial disorientation of the pilot with consequent loss of aeroplane control, inadequate traffic separation or controlled flight into terrain.

Further rulemaking is anticipated when a fix is developed by the PFD manufacturer.

This Amendment corrects a typographical error in the FAA AD number in Note 6.

The original issue of this Directive became effective on 10 April 2008.

James Coyne
Delegate of the Civil Aviation Safety Authority

21 April 2008

Appendix - Limitations Regarding Avidyne Primary Flight Displays (PFDs)

Before conducting flight operations, pilots must review and be familiar with the Crosscheck Monitor section of the Avidyne Primary Flight Display Pilot's Guide and all limitations contained in the aircraft operating handbook.

As a normal practice, all pilots should be vigilant in conducting proper preflight and in-flight checks of instrument accuracy, including:

• Preflight check of the accuracy of both the primary and backup altimeter against known airfield elevation and against each other.
• Verification of airspeed indications consistent with prevailing conditions at startup, during taxi, and prior to takeoff.
• "Airspeed alive'' check and reasonable indications during takeoff roll.
• Maintenance of current altimeter setting in both primary and backup altimeters.
• Cross-check of primary and backup altimeters at each change of altimeter setting and prior to entering instrument meteorological conditions (IMC).
• Cross-check of primary and backup altimeters and validation against other available data, such as glideslope intercept altitude, prior to conducting any instrument approach.
• Periodic cross-checks of primary and backup airspeed indicators, preferably in combination with altimeter cross-checks.

For flight operations under instrument flight rules (IFR) or in conditions in which visual reference to the horizon cannot be reliably maintained (that is IMC, night operations, flight operations over water, in haze or smoke) and the pilot has reasons to suspect that any source (PFD or back-up instruments) of attitude, airspeed, or altitude is not functioning properly, flight under IFR or in these conditions must not be initiated (when condition is determined on the ground) and further flight under IFR or in these conditions is prohibited until equipment is serviced and functioning properly.

Operation of aircraft not equipped with operating backup (or standby) attitude, altimeter, and airspeed indicators that are located where they are readily visible to the pilot is prohibited.

Pilots must frequently scan and crosscheck flight instruments to make sure the information depicted on the PFD correlates and agrees with the information depicted on the backup instruments.