Every AOG has a signal 7 days earlier.

FAA Service Difficulty Reports turn every part failure into a public buying trigger. We pulled this data ourselves. Here is how we turn it into a weekly feed matched to what PACE stocks.

Your sample data

Two files, downloadable.

The showcase data we built for this call. 366 detailed events and 50 operator summaries, both CSV. The preview under the tiles is real rows from the events file.

FAA Part Issues · 238 KB

Detailed event feed

366 rows × 30 columns. Every filing with tail number, part number, JASC code, reported issue text, and the “aircraft grounded” flag.

Download CSV → Operator Summary · 8 KB

Rolled up per operator

50 rows × 13 columns. Fleet size, events by system, tails involved, first and last event date per operator.

Download CSV →

Preview · first six rows of the events feed (both signal shapes visible)

Date	Operator	Aircraft	System	Part	Reported issue
2026-07-22	Flexjet	Emb EMB505	Avionics	XM Radio Rcvr P/N 011-03177-10	Crew received intermittent GND SPLR FAIL and HSDB FAULT CAS messages during cruise. XM radio receiver at fault.
2026-07-22	Flexjet	Emb EMB505	Avionics	XM Radio Rcvr P/N 011-03177-10	On aircraft power up, crew received momentary GND SPOILER, HSDB fault CAS messages. Same P/N as N392FX.
2026-07-24	Aero Micronesia	Boeing 757-230	APU	Flow Sensing Module	APU INOP. R & R FLOW SENSING MODULE PER AMM, OPS CHECK NORMAL. Tail N888LT.
2026-07-28	Aero Micronesia	Boeing 757-223	APU	Deoil Solenoid Valve	APU FAILED TO START DURING LANDING. R & R APU DEOIL SOLENOID VALVE IAW AMM. Tail N193AN.
2026-08-11	Aero Micronesia	Boeing 757-223	APU	ECU P/N 2117342-20	APU FAILED TO START TWICE AFTER LANDING. REPLACED APU ECU IAW APPLICABLE AMM. Same tail N193AN.
2026-07-31	Bering Air	Beech B200	Landing gear	Gear Actuator P/N 101388-014-1	Aircraft in for Phase 1 inspection. Gear actuator cracked. 10 swings required to bleed system after opening lines. Tail N949BW.

The core insight.

When a part fails, the operator files an FAA Service Difficulty Report. That filing is a public record that a specific operator just needed, or is about to need, a replacement part, an exchange unit, or a repair for a specific system.

For a parts-and-AOG supplier, that is the buying trigger. Most brokers wait for the phone to ring on an AOG. A signal engine reaches the operator the week the write-up posts, with the right part and traceability in hand.

The SDR database is public, continuous, and messy. Turning it into a clean, ICP-filtered, system-matched, enriched feed is the moat. The sample we pulled is a showcase of what the live engine produces, not the delivery. Every number below is a preview of what a running feed reaches every week.

The sample, a preview of the full feed.

Window: Jul 01 to Aug 21, 2026 (about 7.4 weeks). Segment: TARGET, mid/small operator. This is a filtered showcase, not the ceiling. The live engine reaches materially wider (see the note under the third card).

Qualified events, in the sample

Across 14 mid/small operators. Every one of them a live buying moment the week it posted.

~6 / wk

Weekly rate, this slice

Steady flow of target events. Low volume, extraordinarily high intent. The live feed adds more systems and international registries on top.

~300+

Annualized from this slice

This is the filtered core, not the ceiling. Live feed with the full SDR + more systems + EASA and international registries is materially larger, and we tune it against what PACE stocks.

By PACE product line.

Every event in the sample maps cleanly to one of PACE’s three core system lines.

System	Events	Share
Avionics	25	56%
Landing gear / brakes / wheels	12	27%
APU	8	18%
Total	45

Top target operators.

The 14 mid/small operators the segment surfaces, ranked by event volume in the window.

Operator	Fleet	Type	Events	Dominant system
Flexjet Llc	230	Part 135 fractional	16	Avionics (all 16)
Aero Micronesia Inc	4	Part 121	7	APU (5 of 7)
Sun Country Inc	36	Part 121	4	APU (3)
Uas Transervices Inc	98	Part 135 cargo	4	Gear (all 4)
CBG, Critical Care, Corsair, CSI	14–45	Part 135	2 each	Mixed
Bering, Southern, Sunrise, Cargo Aircraft Mgmt, Guardian, Martinaire	14–107	Part 121 / 135	1 each	Mixed

Two signal shapes.

Both patterns already appear in your sample. Both are actionable this week.

Shape A

Fleet-wide known-part defect across operators

One part number failing at multiple operators of the same airframe. Signal exposes multi-operator demand for one specific part.

Play: stock the P/N, reach every operator of that airframe, lead with an exchange unit and traceability.

In your sample: Flexjet filed 16 avionics events in 3 days (Jul 22–24) on tails N376FX to N392FX. All same root cause: Embraer Phenom 300 (EMB505) XM radio receiver, P/N 011-03177-10, avionics software 18.10, HSDB faults. Embraer investigating (case EEJ-05526497). Same part and fault also appears at NetJets and University of Notre Dame on the same aircraft type.

Shape B

Single operator with a sick system

Recurring events on the same system at a single small-fleet operator. A small operator cannot hold deep spares, so a repeating pattern predicts an AOG.

Play: reach the DOM with an exchange or overhaul quote before the next failure grounds them.

In your sample: Aero Micronesia (a 4-aircraft 757 operator) filed 7 events, 5 of them APU, on two tails (N193AN, N888LT) across Jul 24 to Aug 18: flow-sensing module, deoil solenoid, ECU, IGV actuator, bleed sensor. Textbook APU exchange / overhaul + AOG parts conversation.

Urgency scoring.

The raw file already carries the fields we need to tier by heat: Precautionary Procedure, Stage of Operation, and free-text that repeatedly says “AIRCRAFT WAS GROUNDED.”

Tier 1 · Hottest Grounded / AOG

Phone-first, today. 24/7 desk answers. Traceable stock ready to ship.

Tier 2 · Warm Deferred on MEL

Part needed before the clock runs out. Email quote, phone follow-up same day.

Tier 3 · Planned Found on inspection

Email exchange or overhaul quote. No panic, but the buying window is open.

Who to target, and why the majors are out.

The segmentation is deliberate. American (987 aircraft), Delta (1,114), United (1,203) generated the most events in the raw feed, but they are labeled “Major carrier”, not target. They run their own materials organizations, PMA parts, and MRO contracts. They are not PACE’s buyer.

The TARGET set is the ICP: fleets of roughly 4 to 100, Part 135 charter and cargo, regional Part 121, air ambulance, and fractional. They cannot hold deep rotable inventory, so a part failure becomes a scramble, an AOG, a call for an exchange unit with trace. That is PACE.

Possible tier-2 expansion (confirm with PACE): high-count same-type fleets like Air Methods (334 HEMS helicopters) and NetJets (fractional) generate recurring, predictable rotable demand for identical components. Labeled non-target in this sample, but worth a dedicated recurring-supply play.

The personas at a mid/small operator.

Small buyer set, concrete roles. At the smallest Part 135 operators the DOM often is the purchasing function too.

AIRWORTHINESS

DOM & Chief Inspector

Own the write-up. First to know about a system in trouble.

PURCHASING

Director of Materials

Parts Manager, Purchasing lead. Buys the part.

3AM DESK

AOG desk / Maint control

On-call maintenance controller. The one who takes the emergency call.

TINY OPERATORS

DOM = purchasing

At sub-15 aircraft Part 135 operators, one or two contacts do all of it.

Messaging angles by system.

Pattern-level and helpful. Not surveillance. Every angle leans on PACE’s real differentiator: traceability, 24/7 AOG, component exchange.

Signal	Opening angle
Fleet-wide part defect (EMB505 XM radio)	“The Phenom 300 XM-radio HSDB fault is hitting fleets right now. We stock P/N 011-03177-10 exchange units with full trace, ready for AOG.”
Recurring APU distress (757, small operator)	“Recurring APU bleed and start write-ups on a small fleet usually means it is time to price an exchange before the next AOG. We trade 757 APUs with trace.”
Gear / brakes age issue (Beech 1900 / C99 corrosion, downlock switches)	“Beech 1900 gear downlock and PCB corrosion is a known age item. We carry the switches, harnesses, and assemblies with trace.”
Grounded / AOG event	“Saw the fleet is chasing a [system] part. If anything is AOG, we run 24/7 with traceable stock.”

Build order.

PHASE 0

Automate the SDR pull

Public FAA SDR pipeline. Apply PACE’s segment filter (fleet size + operator type = TARGET). Filter to APU / gear / avionics. Add grounded/MEL/inspection urgency score. Dedupe by operator+system. Enrich DOM and purchasing contact.

PHASE 1

Weekly signal run

Phone-first on grounded/AOG. Email on recurring and fleet-defect. Every touch cross-checked against PACE inventory.

PHASE 2

Fleet-defect radar

Detect one P/N appearing across multiple operators (the EMB505 XM-radio pattern). Pre-position stock. Run a multi-operator campaign on that specific part.

PHASE 3

Expand

International registries (EASA and other SDR equivalents). More part systems beyond the core three. Air Methods / NetJets recurring-type supply play.

Next step.

Two questions decide the first build:

Which of the three systems does PACE most want to fill first (APU, gear, avionics), and does current inventory bias that choice?
Confirm the ICP segment rule (fleet-size and operator-type thresholds) so we can reproduce the “TARGET” flag automatically on the live SDR feed.

Answer those, and we scale the showcase you just read into a live weekly signal feed with enriched contacts, scored by urgency, matched to what PACE has on the shelf.