Equipment inventory
| Equipment | Function | Important limitation or check |
|---|---|---|
| Bendix/King KNS 80 | VOR/localiser, built-in DME and legacy VOR/DME RNAV | Not GNSS or modern PBN. Confirm glideslope fit, display routing, FM immunity and serviceability. |
| Bendix/King KX 155 TSO | VHF COM plus second VOR/localiser source | Existing COM section was reported as 25 kHz. Confirm replacement outcome and whether the installed NAV/indicator supports glideslope. |
| Narco 141 TSO ADF | NDB bearing and legacy procedure support | Limited modern use; test receiver, antenna and indicator. |
| Trig TY91 | Compact VHF COM, normally 8.33 kHz capable | Confirm installed configuration and release status. |
| Trig TT31 | Mode S transponder | Mode S does not by itself prove approved ADS-B Out. Confirm position source and configuration. |
| Bendix/King KMA 24 TSO | Audio selection and marker/audio functions depending installation | Confirm switching labels, isolation and marker installation if relevant. |
| Flightcom intercom | Crew/passenger intercom | Convenience system, not a navigation capability. |
| Garmin GPSMAP 295 | Legacy portable moving-map GPS | Failed; scrap/remove. Not approved primary IFR navigation and not a backup. |
| Conventional six-pack | Attitude/performance flight information | Serviceability, pitot/static, gyro-power indication and electrical/vacuum dependencies require confirmation. |
The identity of an old Bendix unit now reported as possibly dead or uneconomic to repair is not known. Do not infer whether this is the KNS 80, KX 155, KMA 24 or another unit; the lost NAV, COM, DME or audio functions differ materially.
Acquired or reported, not established as installed
Purchase evidence and Colin's 24 July update establish several different statuses. None of these entries proves installation, approval, configuration, serviceability or release to service. The recorded purchase excludes fitting work and installation parts.
| Status | Equipment | Proposed function and important limitation |
|---|---|---|
| Purchased/ordered | JPI FS-450 (FS450P) |
Fuel-flow sensing and display. It does not measure tank quantity and does not resolve the open fuel-gauge defect. |
| Purchased/ordered | Garmin GMA 345 (010-01319-03) with installation kit |
Bluetooth audio panel, six-place intercom, 3D Audio and voice recorder. Complete dual-COM, jack, source, isolation and fail-safe integration remains to be designed. |
| Purchased/ordered | Trig TN72 (01685-00) and TA70 (01740-00) with antenna kit |
TSO-C199/TABS GNSS position source and WAAS antenna, potentially for compatible TT31 surveillance integration. Not an IFR navigator. |
| Purchased/ordered | Comant CI102 | Marker-beacon antenna. An antenna alone adds no marker receiver, GNSS, DME or approach capability. |
| Bought separately, reported | Trig TY96 | 8.33/25 kHz COM. Exact unit evidence, condition, position, installation and release remain to record. |
| Existing, reported | Trig TT31 | Mode S transponder. An approved ADS-B claim depends on the complete position-source installation, configuration and testing. |
| Hoped for, reported | PAI-700 compass | Optional readability improvement; holder/mount is likely separate and applicability remains to confirm. |
| Back-ordered, reported | USB charger | Identify the exact approved product and include electrical load, protection and installation scope. |
Colin reports a Garmin GTN 750 and Narco 890 DME as later intentions, plus possibly one or two Garmin units described as “G1275”. The wording “G1275” is unresolved and must be identified rather than assumed to mean GI 275. The exact GTN 750 variant and acquisition status are also still to be confirmed.
Portable situational awareness
SkyDemon with Avionix Aero Tracker supplies a useful, separate planning and awareness layer. Aero Tracker provides independent GNSS and supported traffic information; SkyDemon provides moving-map, terrain, airspace, weather/NOTAM briefing support, frequencies, plates and diversion assistance.
It does not provide an approved IFR navigator, CDI/HSI, ILS receiver, barometric altitude, indicated airspeed, stabilised heading, DME, transponder or formal navigation-failure contingency. GPS altitude is not barometric altitude; groundspeed is not IAS; track is not heading.
Use the same correct ICAO aircraft identity in the transponder, Aero Tracker and SkyDemon to avoid own-ship/ghost traffic. Traffic reception is incomplete and does not constitute TCAS.
Present source relationships
Capability matrix
| Function | Present equipment | Confidence | Training/operational value |
|---|---|---|---|
| Attitude and performance scan | Conventional six-pack | Visible; serviceability to verify | Essential |
| VOR and localiser | KNS 80 and KX 155 | High for basic capability | Very high |
| ILS glideslope | KNS 80/KX 155 installation | Probable, not proved | Very high |
| Distance measuring | KNS 80 DME | High; test required | High |
| NDB bearing | Narco 141 | Historically identified | Legacy/moderate |
| 8.33 kHz communication | Historical TY91 fit; TY96 reported bought separately | Capable equipment identified, final installation unproved | Required where applicable |
| Mode S surveillance | TT31 | Historically identified | Operationally important |
| ADS-B position source | TN72/TA70 purchased/ordered | Not installed or approved here | Potential TT31 integration; not IFR navigation |
| Approved modern PBN | None identified | Gap | GTN 750 reported as the later direction; exact variant and installed design open |
| Moving map and traffic | SkyDemon + Aero Tracker | Owner confirmed | High supplementary value |
Questions for the avionics inspection
- Which receiver drives each course indicator, and how is source selection made?
- Do both NAV paths provide glideslope, and can either fly a complete ILS independently?
- Is the KNS 80 installation FM immune and supportable for the intended operations?
- Is the KNS 80 DME accurate and correctly paired with both manual and RNAV use?
- What exactly remains after the 25 kHz COM work, and is the audio-panel labelling correct?
- Is the TT31 configured for approved ADS-B Out, merely capable of it, or Mode S only?
- Which Bendix unit is considered unserviceable, and will the KNS 80 DME or later Narco 890 provide the retained DME path?
- What exact GTN 750 variant and “G1275” unit or units are intended, and which approved display will provide lateral/vertical guidance and source annunciation?
- Can the purchased TN72/TA70 feed the existing TT31 in an approved configuration for the intended ADS-B claim?
- Does the complete quotation include all fitting parts, labour, electrical protection/load work, antennae, harnesses, panel work, tests, weight-and-balance amendment, AFM/PBN documents, approval and release?