# Service difficulty reports that cite it: Robinson SB 51

A list on [Robinson SB 51](https://openairdocs.org/service-documents/robinson/sb-51.md).

Newest first, with the revision each cites, as OpenAirDocs read it from the records’ text. OpenAirDocs read these citations from the records’ text, so one can be misread: check it against the record. A newer revision may exist that no record cites.

- [SDR CA040114008](https://openairdocs.org/sdr/CA040114008.md): Rotor Head · Robsin R44 · Dec 2, 2003 · No revision named
  > (CAN) UPON RECEIPT OF AD2003-24-51 HELICOPTER WAS INSPECTED FOR THE SUSPECT NAS6605-31BOLTS. EVEN THOUGH THE R44 S/N WAS NOT LISTED IN THE AD OR ROBINSON HELICOPTER SERVICE BULLETIN 51 THE T/R HUB NAS

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT s.sdr_id, s.difficulty_date, s.aircraft_make, s.aircraft_model, s.part_name, string_agg(DISTINCT c.revision, ', ' ORDER BY c.revision) AS revisions,
  bool_or(c.incorporated_by_reference) AS incorporated_by_reference, bool_or(c.in_regulatory_text) AS in_regulatory_text
FROM 'https://openairdocs.org/data/latest/service_document_citation.parquet' c JOIN 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' s ON s.sdr_id = c.record_id
WHERE c.document_id = 'robinson/sb-51' AND c.record_type = 'faa_service_difficulty_report'
GROUP BY ALL
ORDER BY max(c.record_date) DESC
```

This list as a web page: https://openairdocs.org/service-documents/robinson/sb-51/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.