Display STC
Display system installation evidence for an STC approval
This support builds the installation case for a display article seeking an STC approval. It carries the article's qualification into the flight deck, checking that panel integration, field of view, lighting compatibility, and interface data are substantiated against the type design the modification touches. A certification engineer runs it while the installation data package is drafted, so the cockpit-level evidence is tested before the STC is filed. You receive a product-specific evidence gap list, a trace map from installation claims to the certification basis and means of compliance, and a closure sequence for the STC installation approval.
When this review is needed
- A display authorized at the equipment level now has to be installed under an STC and the cockpit evidence needs a read.
- The panel location raises a field-of-view or reach question the installation data has to answer for the flight crew.
- The display has to be compatible with the existing cockpit lighting and night-vision configuration the type design assumes.
- The same STC is being extended to another flight-deck variant and the installation evidence has to be checked for that effectivity.
The problem
A display that passed its own qualification still has to work in the specific flight deck it is fitted to. Panel placement drives field of view and reach, the display's luminance and color have to coexist with the existing cockpit lighting and any night-vision provisions, and the interface data has to substantiate how the display drives and is driven by aircraft systems. Installation evidence is usually drafted after the equipment data settles, so the flight-deck questions surface with the least schedule to answer them.
What gets reviewed
- Panel integration, field of view, and reach substantiated against the flight deck the STC modifies
- Display luminance and color compatibility with the existing cockpit lighting and night-vision configuration
- Interface data for how the display drives and is driven by the aircraft systems it connects to
- The article's equipment-level qualification carried into the flight-deck environment it now sees
- The certification basis and means of compliance confirmed for the installed display function
- Effectivity of the installation evidence reconciled to the flight-deck variants the STC claims
Scope this review
Tell us the asset, the event, and the evidence in scope, and we will outline a focused first engagement.
Identify what is missing against the means of compliance.
What gets validated
- Panel placement is supported by a field-of-view and reach assessment for the flight crew, not a drawing alone
- Display luminance and color are shown compatible with the existing lighting and any night-vision provisions
- Interface data substantiates the display's connections without assuming behavior the aircraft systems do not provide
- The environmental qualification the display carries covers the conditions its installed location actually sees
- Installation effectivity in the evidence matches the flight-deck variants named in the STC application
Evidence normally required
- The display STC installation data package draft with the certification basis it declares
- Panel layout and field-of-view drawings for the flight deck
- The display's luminance and color data with the cockpit lighting and night-vision configuration
- Interface control data for the display's connections to aircraft systems
- The display's equipment-level qualification with its authorization reference
Common discrepancies
- A panel location shown on a layout but never assessed for field of view or reach from the crew seats
- Display luminance or color that clashes with the existing cockpit lighting or night-vision compatibility
- Interface data that assumes a signal or behavior the connected aircraft system does not actually provide
- Cockpit-level evidence drafted for one flight-deck variant and claimed across an effectivity it never analyzed
What is at stake
Installation evidence that does not reach the certification basis leaves the STC exposed on the human-factors and integration questions authorities weigh most for a display. A panel location that compromises field of view or a lighting incompatibility found late can force a design change after drawings are frozen, and a flight-deck integration problem discovered on the aircraft is far more costly than one caught in the data.
How the work runs
Frame the flight deck
Fix the flight-deck variant, the panel zone, and the certification basis the installation evidence has to reach.
Assess the human factors
Trace panel placement to a field-of-view and reach assessment for the flight crew.
Check integration
Confirm lighting compatibility and that interface data matches what the aircraft systems actually provide.
Order the display install gaps
Sequence the cockpit-level items by closure difficulty against the display STC filing date.
What the buyer receives
- A product-specific gap list on the display installation evidence, ranked by how hard each item is to close
- A trace map from the field-of-view, lighting, and interface claims to the certification basis and means of compliance
- A closure sequence that orders the cockpit-level display evidence against the STC filing date
Who uses the output
- Certification engineers drafting the display STC installation data package
- Flight-deck integration leads deciding whether panel location or lighting has to change
- Program managers tracking which cockpit-level gaps hold up the display STC application
How the work fits into the transaction or program
The review bridges the display's equipment authorization and its installation approval, testing whether the qualification survives the flight deck it is fitted into. Its gap list drives the cockpit-level substantiation the STC needs, and its trace map ties the installation claims back to the certification basis the equipment evidence was built on.
Start with a single asset
Confirm requirements map to substantiating evidence.
Jurisdiction-specific considerations
An STC accepted under one authority does not automatically hold under another, and the flight-deck human-factors substantiation an authority expects can differ even where the display's equipment authorization is shared. The review notes where installation evidence built for one register needs rework for the receiving system.
Regulatory limits
The review checks the installation evidence against the certification basis and marks where it holds or comes up short. It grants no STC, approves no installation, and makes no airworthiness determination on the modified flight deck.
What this review does not cover
- Producing the missing field-of-view, lighting, or interface substantiation
- Preparing or lodging the display STC application and its installation data package
- Any airworthiness or return-to-service determination on the aircraft after the display is installed
Specific to this review
- A display's panel location is a human-factors argument as much as a mechanical fit, because field of view and reach from the crew seats decide whether the installation is acceptable.
- Luminance and color that pass in isolation can still clash with the cockpit's existing lighting or night-vision compatibility, so the installation has to prove the display coexists with what is already there.
- Interface data often assumes a signal the connected system does not provide in the exact form expected, which surfaces as an integration finding rather than an equipment one.
Sources
U.S. Government (eCFR). Type certificates, STCs (Subpart E), TSO authorizations (Subpart O), PMA (Subpart K), and export airworthiness approvals (Subpart L).
European Union / EASA. EASA design and production certification, STCs, ETSO authorizations, and EASA Form 1 release.
RTCA. Environmental qualification test categories and procedures referenced by TSO and equipment qualification.
RTCA. Objectives and lifecycle data for airborne software assurance, by design assurance level (DAL A-E).
Frequently asked questions
The display already has its software and environmental authorization. What is left for the STC?
Equipment authorization covers the display in isolation. The STC has to prove it works in a specific flight deck: field of view and reach from the crew seats, compatibility with the existing lighting, and interfaces that match what the aircraft systems provide. Those integration questions are where display STCs most often stall.
Relevant glossary terms
Related pages
Where this fits
Talk to an engineer who has done this work
We will walk through your current state, the records or evidence involved, and a scoped first engagement.
Talk through the aircraft, records, evidence, deadline, and next useful step.