# Service difficulty reports that cite it: Boeing Special Attention Service Bulletin 747-21-2550

A list on [Boeing Special Attention Service Bulletin 747-21-2550](https://openairdocs.org/service-documents/boeing/sb-747-21-2550.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 UIEA2021050701105](https://openairdocs.org/sdr/UIEA2021050701105.md): Wire · Boeing 747400 · May 4, 2021 · N405KZ · No revision named
  > FOUIND WIRE NO. W4698-705-20 NOT ROUTE CORRECTLY IAW SB 747-21-2550 (AD)(<P>TRANSFER TO EO NO. 4421A098 REV 9 AND W/O NO. 5775917 CLOSE.</P>)

## 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 = 'boeing/sb-747-21-2550' 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/boeing/sb-747-21-2550/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.