# Service difficulty reports that cite it: Cessna SB 500-21-20

A list on [Cessna SB 500-21-20](https://openairdocs.org/service-documents/cessna/sb-500-21-20.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 97ZZZX2870](https://openairdocs.org/sdr/97ZZZX2870.md): Fan · Cessna 500CESSNA · May 6, 1997 · N96FB · No revision named
  > THE CABIN BLOWER MOTOR FAN CAME APART CAUSING THE MOTOR TO OVERHEAT AND ULTIMATELY BURN THE BLOWER MOTOR UP. INSTALL SB 500-21-20.

## 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 = 'cessna/sb-500-21-20' 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/cessna/sb-500-21-20/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.