# Regulus search export

- Query: `62 FR 60747`
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- Exported: 2026-08-23T16:01:58.379Z

## 1. NTSB Safety Recommendation P-89-006

**Citation:** P-89-006  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective / published:** 1989-08-09 / 1989-08-09

THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: ESTABLISH INSPECTION, MAINTENANCE, AND TEST REQUIREMENTS TO DEMONSTRATE AND MAINTAIN THE PROPER FUNCTIONING OF CHECK VALVES INSTALLED IN PIPELINE SYSTEMS.

### Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-89-006>
- Source ID: `ntsb-pipeline`
- SHA-256: `533ba0c80b3385ac1fd538cca05727ff2f33f9c4a539172784c07c8d434380bb`
- Retrieved: 2026-08-20T04:57:24.741Z
- Document slug: `ntsb-recommendation-p-89-006`
- Related records: 3