ashfordeOU Avionics domain pack (router)
Route here when the task is avionics and flight software assurance for civil aircraft. This pack is the certification spine for airborne software and hardware.
Domain
Avionics and flight software assurance: airborne software lifecycle certification (DO-178C), software tool qualification (DO-330), airborne electronic hardware design assurance (DO-254), environmental qualification (DO-160), and transport-category airworthiness certification (FAR-25/CS-25).
Sub-skills in this pack
| Path | Skill | When to route to it |
|---|---|---|
| avionics/do178c/planning | DO-178C planning | software level/DAL, PSAC, planning artifacts |
| avionics/do178c/development | DO-178C development | requirement-to-code traceability, derived requirements |
| avionics/do178c/verification | DO-178C verification | structural coverage, MC/DC, independence |
| avionics/do178c/software-testing | DO-178C software testing | requirements-based test case generation, MC/DC test case count, coverage objectives per level |
| avionics/do178c/configuration-management | DO-178C configuration management | baselines, problem reports, release gate |
| avionics/do178c/tool-qualification | DO-330 tool qualification | TQL per tool criterion, tool credit, TOR |
| avionics/do178c/airworthiness-liaison | DO-178C airworthiness liaison | certification basis coverage, SOI audits, open items |
| avionics/do160/environmental-qualification | DO-160 environmental qualification | test matrix per equipment category, temperature/vibration/EMC |
| avionics/do160/lightning-protection | DO-160 lightning protection | section 22 induced transients, lightning protection zones |
| avionics/do160/electrostatic-discharge | DO-160 electrostatic discharge | section 25 ESD air discharge level, 150 pF / 330 ohm generator model, test point applicability |
| avionics/do160/radio-frequency-susceptibility | DO-160 RF susceptibility | RS103 radiated immunity, CS114 conducted immunity, field strength |
| avionics/do160/power-input | DO-160 power input | section 16 voltage limits, sag/surge transients, frequency tolerance |
| avionics/do254/hardware-planning | DO-254 hardware planning | simple vs complex AEH, PHAC |
| avionics/do254/verification | DO-254 verification | verification methods per AEH class, independence, coverage |
| avionics/do254/configuration-management | DO-254 configuration management | baselines, ECR/ECO, change class, hardware configuration index |
| avionics/do254/requirements-capture | DO-254 requirements capture | requirement characteristics, derived requirements, trace links |
| avionics/far-cs25/airworthiness | FAR-25/CS-25 airworthiness | certification basis, means of compliance, 25.1309 |
| avionics/far-cs25/special-conditions | FAR-25/CS-25 special conditions | novel design features, FAR 25.17, special-condition scope |
| avionics/flight-management/flight-planning | FMS flight planning | great-circle track distance, waypoints, leg geometry |
| avionics/flight-management/vertical-navigation | FMS vertical navigation | top of descent, descent gradient, altitude constraints, VNAV path |
| avionics/data-bus/arinc429-protocol | ARINC 429 protocol | ARINC 429 word format, octal label, SDI, BNR, BCD, SSM, odd parity, 12.5 or 100 kbps, transmitter receiver topology |
| avionics/data-bus/mil-std-1553 | MIL-STD-1553 data bus | command word, remote terminal, bus controller, Manchester II, dual redundant bus, message format |
| avionics/data-bus/arinc664-afdx | ARINC 664 AFDX network | virtual link, BAG, frame size, jitter, end system, switched ethernet, latency |
| avionics/ima/ima-partitioning | IMA partitioning | ARINC 653 partition, major frame, partition schedule, sampling port, queuing port, inter-partition communication, health monitoring |
| avionics/ima/do297 | IMA architecture and acceptance | integrated modular avionics, DO-297, module acceptance, incremental certification, partition allocation, resource budget, CPU memory I/O, integrity requirements, IMA architecture, shared resources |
| avionics/flight-management/performance-computation | Performance computation | FMS performance, cost index, ECON, cruise Mach, step climb, top of descent, fuel time trade, VNAV |
| avionics/fsw/cfs-architecture | Cfs Architecture | cFS, core flight software, cFE, OSAL, PSP, software bus, publish subscribe, app skeleton, telemetry pipeline. |
| avionics/fsw/fprime-component | F Prime component | F Prime, F-prime component framework, topology, rate group, command dispatch, port connection |
| avionics/do160/radio-frequency-emissions | RF emissions (DO-160 sec 21) | radio frequency emissions, DO-160 section 21, conducted emissions, radiated emissions, CE102, RE102, emission limit, emission margin, dBuV, dBuV/m, EMC qualification |
| avionics/flight-management/lateral-navigation | Lateral navigation (LNAV) | lateral navigation, LNAV, cross-track error, track angle error, great-circle track, turn anticipation, fly-by waypoint, fly-over waypoint, intercept heading, FMS lateral guidance |
| avionics/flight-management/radio-navigation-aids | Radio navigation aids | VOR radial, DME slant range, ILS localizer deviation, glideslope deviation, radio navigation geometry, bearing to the navaid station, approach course offset |
| avionics/flight-management/rnp-anp-containment | RNP/ANP containment | required navigation performance, actual navigation performance, RNP containment, ANP comparison, lateral position error sigma, 95 percent containment, performance based navigation |
| avionics/flight-management/rta-time-control | RTA time control | required time of arrival, RTA time constraint, speed adjustment, arrival window, time error, 4D trajectory, FMS time control |
| avionics/surveillance/tcas-resolution-advisory | TCAS resolution advisory | TCAS II, traffic alert and collision avoidance, resolution advisory, modified tau, DMOD, sensitivity level, intruder threat logic, climb descend advisory |
| avionics/surveillance/ads-b-surveillance | ADS-B surveillance | ADS-B, ADS-B Out, ADS-B In, extended squitter, NIC containment radius, NACp accuracy, SIL integrity, ADS-B range |
| avionics/surveillance/airborne-weather-radar | Airborne weather radar | weather radar tilt, reflectivity rainfall, Marshall-Palmer, echo level, ground clutter check |
| avionics/do178c/data-control-coupling-analysis | Data and control coupling (DO-178C) | data coupling analysis, control coupling analysis, shared variable pairs, coupling coverage evidence, level A objectives | | avionics/fsw/real-time-scheduling | Real-time scheduling | rate monotonic scheduling, response time analysis, earliest deadline first, Liu Layland bound, CPU utilization, fixed priority schedulability | | avionics/flight-management/radius-to-fix-leg | Radius-to-fix leg | radius to fix leg, RF leg, RNP AR procedure, turn center, arc length, path terminator, flyable arc check | | avionics/do178c/previously-developed-software | Previously developed software | previously developed software, PDS qualification, software reuse credit, delta objective analysis, modified software scope, reuse classification |
| avionics/data-bus/arinc429-bus-loading | ARINC 429 bus loading | ARINC 429 bus loading, label rate budget, percent utilization, word rate capacity, transmit schedule headroom | | avionics/data-bus/mil-std-1553-bus-loading | MIL-STD-1553 bus loading | MIL-STD-1553 bus loading, 1553 minor frame load, wire word time, 1553 bus utilization, bc-rt message overhead, schedule headroom | | avionics/flight-management/holding-pattern-entry | Holding pattern entry | holding pattern entry, direct teardrop parallel entry sector, outbound leg timing, holding wind correction, entry lap time | | avionics/fsw/shared-resource-access-control | Shared resource access control | shared resource access control, priority ceiling protocol, priority inheritance, worst case blocking, stack resource policy, blocking time bound, schedulability with blocking | | avionics/flight-management/dme-arc-leg | DME arc leg | dme arc leg, VOR DME arc, arc length in nautical miles, arc bank angle, radial intercept, arc chord, DME radius | | avionics/flight-management/rhumb-line-leg | Rhumb line leg | rhumb line leg, constant course leg, Mercator course, parallel leg length, rhumb versus great circle, long range leg, FMS leg geometry |
| avionics/fsw/aperiodic-server-scheduling | Aperiodic server scheduling | aperiodic server scheduling, sporadic server, deferrable server, polling server, server capacity, aperiodic response time, fixed priority aperiodic service |
| avionics/fsw/deadline-monotonic-scheduling | Deadline Monotonic Scheduling | deadline-monotonic-scheduling, constrained-deadline-rta, arbitrary-deadline-rta, release-jitter-rta, dm-priority-assignment, shorter-deadline-order | | avionics/fsw/mixed-criticality-scheduling | Mixed Criticality Scheduling | mixed-criticality-scheduling, amc-rtb-analysis, dual-criticality-execution-time, hi-criticality-mode-rta, lo-criticality-mode-rta, criticality-mode-change-rta | | avionics/fsw/virtual-deadline-scheduling | Virtual Deadline Scheduling | virtual-deadline-scheduling, edf-vd, virtual-deadline-scaling, dual-criticality-schedulability, mode-switch-feasibility | | avionics/fsw/cyclic-executive-scheduling | Cyclic Executive Scheduling | cyclic-executive-scheduling, time-triggered-frame-schedule, hyperperiod-major-cycle, frame-length-admissibility, per-frame-capacity, frame-table-slack |
Routing guidance
Software certification questions (levels, PSAC, coverage, traceability, baselines) route to the DO-178C sub-skills.
Requirements-based test case generation and structural coverage measurement questions (MC/DC t- Cfs questions route to the fsw cfs-architecture sub-skill. est case count, coverage objectives per level) route to the DO-178C software-testing sub-skill; verification process questions (reviews, analyses, independence) stay with the verification sub-skill.
Tool credit and qualification questions route to the DO-330 sub-skill.
Environmental test questions (temperature, vibration, EMC, lightning, RF immunity) route to the DO-160 sub-skills.
Electrostatic discharge questions (section 25 air discharge level, 150 pF / 330 ohm generator model, discharge counts, test point applicability from personnel accessibility) route to the DO-160 electrostatic-discharge sub-skill, not to lightning-protection or power-input.
Power-input questions (section 16 voltage limits, sag/surge transients, frequency tolerance, emergency power) route to the DO-160 power-input sub-skill.
Hardware assurance questions (AEH classification, PHAC, verification, requirements capture) route to the DO-254 sub-skills.
Hardware configuration and change-control questions (baselines, ECR/ECO, HCI) route to the DO-254 configuration-management sub-skill.
Type-certification basis questions (FAR-25 vs CS-25, 25.1309) route to the far-cs25 airworthiness sub-skill.
Novel-feature questions (special conditions, FAR 25.17, equivalent safety) route to the far-cs25 special-conditions sub-skill.
FMS route questions (waypoints, leg geometry, TOD, VNAV constraints) route to the flight-management sub-skills.
ARINC 429 word encoding and decoding, octal label, SDI, BNR and BCD data fields, SSM, and odd parity questions route to the data-bus arinc429-protocol sub-skill.
System-level engineering and safety questions route to the systems-engineering-safety pack instead.
MIL-STD-1553 command word encoding, remote terminal and bus controller architecture, Manchester II, and dual redundant bus questions route to the data-bus mil-std-1553 sub-skill.
ARINC 664 AFDX virtual link bandwidth, BAG, jitter, end-to-end latency, and switched network configuration questions route to the data-bus arinc664-afdx sub-skill.
ARINC 653 partition scheduling, major frame feasibility, sampling and queuing ports, and IMA health monitoring questions route to the ima ima-partitioning sub-skill.
Integrated modular avionics architecture planning, partition allocation with resource budgets, and module acceptance criteria route to the ima do297 sub-skill.
FMS performance computation, cost index and ECON cruise speed, fuel-time trade, step-climb logic, and VNAV top-of-descent questions route to the flight-management performance-computation sub-skill.
DO-160 section 21 conducted and radiated emission limits, CE102 and RE102 margins, and dBuV emission checks route to the do160 radio-frequency-emissions sub-skill.
LNAV lateral guidance, cross-track error, track angle error, great-circle track, turn anticipation, and fly-by and fly-over transition questions route to the flight-management lateral-navigation sub-skill.
RTA time control questions (required time of arrival, rta time constraint, speed adjustment, arrival window, time error, 4d trajectory, fms time control) route to the rta-time-control sub-skill.
TCAS II threat detection, modified tau, DMOD, and resolution advisory sense questions route to the surveillance tcas-resolution-advisory sub-skill.
Weather radar operating questions (antenna tilt to cell top, reflectivity rainfall Z-R, echo level, ground clutter check) route to the surveillance airborne-weather-radar sub-skill.
ADS-B equipage and reception questions (ADS-B Out, extended squitter, NIC containment radius, NACp accuracy, SIL integrity, ADS-B range) route to the surveillance ads-b-surveillance sub-skill.
Data and control coupling analysis questions (inter-component shared variable pairs, call edge coupling, level A coupling coverage evidence) route to the do178c data-control-coupling-analysis sub-skill.
Real-time scheduling feasibility questions (rate monotonic, response time analysis, earliest deadline first, Liu-Layland bound) route to the fsw real-time-scheduling sub-skill.
Radius-to-fix (RF) leg construction questions (turn center, arc length, exit track, RNP AR flyable arc) route to the flight-management radius-to-fix-leg sub-skill.
DO-178C previously developed software reuse questions (reuse classification, delta objective coverage, modified software regression scope) route to the do178c previously-developed-software sub-skill.
ARINC 429 bus loading questions (per-label rate schedule, percent utilization of the 100 kbps link, capacity and headroom) route to the data-bus arinc429-bus-loading sub-skill.
Time-triggered cyclic executive scheduling questions (hyperperiod frame table, admissible frame length dividing every task period, per-frame capacity, FITS or no-admissible-frame verdict) route to the fsw cyclic-executive-scheduling sub-skill; priority-driven feasibility (RM bound, RTA, EDF, AMC-rtb, EDF-VD) stays with the fsw real-time-scheduling family.
Install
To install only this pack, copy or symlink each leaf folder above into your host's skills directory (see README Install for per-host commands).
F Prime component and topology questions route to the fsw fprime-component sub-skill.
VOR radial, DME slant range, ILS localizer and glideslope deviation geometry questions route to the flight-management radio-navigation-aids sub-skill.
RNP/ANP containment, actual navigation performance versus required navigation performance, and 95 percent lateral error checks route to the flight-management rnp-anp-containment sub-skill.
MIL-STD-1553 bus loading questions (minor frame wire-word time budget, percent utilization, 80 percent loading guideline verdict) route to the data-bus mil-std-1553-bus-loading sub-skill, not to the 1553 protocol leaf.
Holding pattern questions (direct, teardrop and parallel entry classification from the approach angle, outbound leg timing from altitude, 1-in-60 wind-corrected outbound heading) route to the flight-management holding-pattern-entry sub-skill.
Shared-resource blocking questions (priority ceiling protocol ceilings, worst-case blocking from lower-priority critical sections, response-time analysis with the blocking term, stack-resource-policy schedulability) route to the fsw shared-resource-access-control sub-skill.
Constant-DME arc questions (arc length between radials, bank angle to hold the arc, point on the arc, chord between arc fixes) route to the flight-management dme-arc-leg sub-skill.
Aperiodic/event-driven job service questions (sporadic server, deferrable server, polling server capacity and period, server budget replenishment, aperiodic worst-case response time) route to the fsw aperiodic-server-scheduling sub-skill.
Deadline-monotonic and constrained/arbitrary-deadline response-time questions (deadline-monotonic priority assignment, shorter-deadline order, per-task relative deadlines, release jitter in the response-time iteration) route to the fsw deadline-monotonic-scheduling sub-skill; classic implicit-deadline periodic feasibility stays with real-time-scheduling.
Mixed-criticality scheduling questions (AMC response-time analysis with a dual-criticality execution-time estimate per task, hi- and lo-criticality-mode response times, criticality mode change) route to the fsw mixed-criticality-scheduling sub-skill; single-execution-time implicit-deadline feasibility stays with real-time-scheduling.
Virtual-deadline scheduling questions (EDF-VD virtual deadline scaling factor, dual-criticality schedulability under virtual deadlines, mode-switch feasibility) route to the fsw virtual-deadline-scheduling sub-skill; AMC-rtb fixed-priority analysis stays with mixed-criticality-scheduling.
Constant-course rhumb-line leg questions (Mercator course, rhumb distance, along-parallel leg length, rhumb versus great-circle delta for long legs) route to the flight-management rhumb-line-leg sub-skill.