# Service difficulty reports that cite it: Boeing SB 747-53-2721

A list on [Boeing SB 747-53-2721](https://openairdocs.org/service-documents/boeing/sb-747-53-2721.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 U2RA2023111100047](https://openairdocs.org/sdr/U2RA2023111100047.md): Unknown · Boeing 747446F · Oct 31, 2023 · N537CA · No revision named
  > DURING ACCOMPLISHMENT OF BOEING SB 747-53-2721 AT A-CHECK AT HANGAR 901 EDFH, FOUND CHAFING DAMAGE TO SKIN STA 2557.5 - 2598 STR 1-3. ACCOMPLISHED REPAIR IAW SB 747-53-2721 PART 4 AND BOEING MESSAGE N

## 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-747-53-2721' 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-747-53-2721/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.