NCR-2026-001 containment inspection high P/N 4422-B — Hydraulic Cylinder Rod

EN deposit thickness below spec on OD of part. Spec calls for 0.0005" ± 0.0001", measured 0.0003" average across 4 readings. Bath temperature was at low end of range (185°F vs 188°F target). Possible root cause: heater element degradation.

12 NCR-2026-002 open customer critical P/N 7810-A — Landing Gear Pin

Customer reported micro-cracking on hard chrome deposit. Parts returned for investigation. Lot of 6 pins from WO-2026-0412. Immediate containment: quarantine remaining stock from same bath run.

6 NCR-2026-003 closed shop_floor low P/N 1133-C — Bracket Assembly

Minor cosmetic discolouration on black oxide finish. Traced to elevated bath temperature (147°C vs 141°C target). Thermostat recalibrated. Parts accepted by customer with concession.

Thermostat drift on BOX-01 tank heater. Last calibration was 14 months ago (overdue).

Segregated affected lot. Verified all parts visually. 4 of 20 showed discolouration — reworked.

rework 20 CAPA-2026-001 corrective implementation

Corrective action for NCR-2026-003: black oxide thermostat drift causing out-of-spec bath temperature.

Root cause: calibration interval for tank heater thermostats was set to 18 months. Industry best practice for hot-process tanks is 6–12 months. Maintenance PM schedule did not flag the overdue calibration.

1. Reduce calibration interval for all hot-process thermostats to 6 months.
2. Add calibration due-date alerts to the maintenance dashboard.
3. Retrain maintenance team on calibration SOP revision.
4. Verify all other hot-process tank thermostats within 30 days.

CAPA-2026-002 preventive analysis

Preventive action: implement automated bath temperature alerting across all plating lines to catch thermostat drift before it affects product quality.

XRF Thickness Gauge — Fischer XDL-B CAL-XRF-01 xrf in_service 365 pH Meter — Hanna HI-2020 CAL-PH-01 ph_meter in_service 90 Thermocouple Probe — Fluke 52 II CAL-TC-01 thermocouple overdue 180 SOP-EN-001 — Electroless Nickel Plating Procedure procedure Rev C effective SOP-CR-001 — Hard Chrome Plating Procedure procedure Rev B effective QM-001 — Quality Manual manual Rev 5 effective